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Where smart cities were once regarded purely as a vision of the future, they are now  becoming a reality in numerous urban centres across the globe. From Dubai, Singapore, Amsterdam, Copenhagen, and Madrid to Southampton in the UK, we’re already beginning to see smart cities provide inhabitants with improved living conditions, easier mobility and cleaner, safer environments, by using cloud computing to power services. But as with all public sector initiatives, smart city services need to be delivered as cost effectively as possible to minimise the taxpayer burden. Often, key decision makers are met with obstacles when it comes to deploying smart services, preventing smart cities initiatives from reaching their full potential – or worse, blocking them altogether.  Central to the functioning of most ‘normal’ city ecosystems is the underlying data they run on. Regardless as to whether that data is stored on local servers or using cloud storage, when that data is fragmented or incomplete, identifying emerging trends for strategic planning and cost reduction becomes extremely difficult – and because of this, authorities have to adopt an entirely reactive approach. Conversely, in a smart city environment, connected sensors forming an Internet of Things (IoT) provide valuable data for analysis and, in turn, insight into the specific city’s behavioural trends. With this level of information, services can be optimised to reduce costs and risk, increase urban flows and manage assets. Importantly, they can also provide real-time connections and interactions between the city’s businesses, local governments, service providers and citizens.  In this way, operations and services are elevated through the integration and connection of physical devices via IoT networks, ultimately transforming how a city runs. 
5. The word “elevated” in paragraph 3 can be replaced by ______

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Light, litter and noise from boating and water sports are all major stressors on marine  life, a new study aims to enhance our knowledge of the effects of these stressors. Researchers will be gathering data from sporting events, leisure boating, tourism and beach activities. The project will assess the impact that these activities have on the environment and marine life in order to offer further guidance to organisers and water sports enthusiasts.  Mike Laflin said: “I’ve worked in the sports industry for 30 years, providing market intelligence and information services and a few years ago I started to measure the impact of sporting events on host cities and nations. I’m excited to support this new research so that we can understand more about how our activities impact the environment and how we can mitigate against any negative effects.” Theresa Laflin said: “We are very excited to be able to support all the wonderful work that the university is doing in the area of marine research, and for increasing our awareness of the detrimental impact we have on our environment.”  The PhD project will be supervised by Tamara Galloway, Professor of Ecotoxicology at Exeter, who conducts research into the human health effects of pollutants, particularly micro-plastics in water; and Steve Simpson, Associate Professor in Marine Biology and Global Change at the University of Exeter, who has shown that man-made noise is having a detrimental effect on the marine world. Simpson said: “Noise from offshore construction, shipping and motorboats all change the ocean soundscape, disrupting acoustic communication, robbing animals of fundamental sensory information and causing stress. However, working with industry we have found that by managing when and where noise is made, and developing new technology to reduce the noise, we can mitigate the impacts of noise. Finding solutions to reduce the impacts of sporting activities will further help to protect the marine environment.” Galloway said: “We’ll be looking at all forms of pollution both from everyday leisure activities and major sporting events. Investigating specific events gives us the opportunity to measure environmental quality before and after the event, and to return after a period of time to assess recovery. Such an event could be seen as an ‘acute stressor’. Then we’ll also assess ongoing sporting activities, akin to a ‘chronic stressor’ and will try to compare and contrast different types of impact.” 

1.  Which best serves as the title for the passage?

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Minister of Industry and Trade Tran Tuan Anh said over the past 50 years of co- operation and development, besides security, political, cultural and social cooperation, ASEAN has been focusing on economic co-operation through the establishment of the ASEAN Economic Community.  ASEAN member states have carried out such activities as one-stop-shop custom procedure, mutual recognition arrangements (MRAs) on electricity, rubber, processed food, pharmaceuticals, etc. Statistics by the Ministry of Industry and Trade reveals when Vietnam joined AFTA in 1996, the country’s two-way trade turnover with other countries in the bloc was only some 5.9 billion USD. In 2018, this number increased by more than 9.5 times and reached about 56.3 billion USD. In the first six months of 2019, Vietnam’s exports to ASEAN reached 13.067 billion USD, up 6.7 percent year-on-year.  Notably, the introduction of the AEC marked a new integration step of ASEAN economies with a goal of building a competitive, dynamic and innovative ASEAN. Tran Thanh Hai, deputy head of the Import-Export Department under the Ministry of Industry and Trade, said that entering the ASEAN market, many Vietnamese products have had positive changes and become more competitive. For example, Vietnam used to acquire shrimp cultivation methods from other countries, such as Thailand in the past. However, it has made it to the list of biggest shrimp exporters in the world. On the other hand, having joined the AEC, enterprises now pay more attention to product quality, including technical standards.  Even when Vietnam enters a new era of integration with global-scale free trade agreements already put on the table for negotiation, the role of ASEAN Economic Community is still significant. AEC lays a firm foundation for Vietnam to continue its journey of global integration, insiders said. 
4. According to paragraph 3, what is correct about vietnam’s shrimp culturing?

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It was not until 1920 when women finally got the right to vote. This was 50 years after the male ex-slaves of the United States were gaining the right to vote. Though women had already right to vote, the stereotypes made women be restricted in their actions. Would you believe that women who were doing the same job as men were getting paid only the 60% of what man wear to paint? In fact, they were getting paid differently for doing exactly the same work. In the 1930s there was not a huge choice of workplace for women. They could still work as secretaries, nurses, teachers and social workers. These kinds of professions were considered typically female professions and were paid much less than other professions. That kind of restrictions themed unbearable for some women. They rejected to go on with this rules anymore. They changed their hair color, style appearance and started to fight against the existing stereotypes. Those women were named in history as “flappers”. The first time in history they started wearing short skirts which were something shocking to the society. They also started driving cars, drinking alcohol, which raised a huge boom. Those kinds of things were considered “Non-feminine”. Actions of flappers were accepted as radical, though they had their influence on the society finally. The heavy restrictions started disappearing every year and today we have what we have. For a very long time, women were considered inferior to men. However, the role of a woman in society has significantly changed during recent decades. Today the importance of women in the society is beyond any suspicion. In today’s world, women with their ambitions, intelligence and strength have proved that the word “inferior” has nothing in common with their gender.  
5. What is the general tone of the whole passage?

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All relationships go through difficult times. In the past, when married couples had problems they usually didn’t (1) _____. They had to either get on well with each other or continue to live together in an unhappy relationship. Getting divorced wasn’t an (2)_____ for most people due to economic and social reasons. Some people believe that this wasn’t such a bad thing. They say that relationships require hard work and (3) ______. “If a relationship is going to last a lifetime, you have to keep working at it,” says Doreen, who is celebrating her fiftieth wedding anniversary this year. “It isn’t all roses and romance. No one perfect all of the time. These days young people give up (4)_______ there’s the slightest argument.” Experts agree that communication is key. The most important thing is to keep talking. How many times have you heard yourself say to somebody, “If only you’d listen!” or “I wish you wouldn’t do that!” The truth is, the (5) ______ couples talk, the better their relationship can be

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When Tony Stark dazzled audiences by designing his Iron Man suit by simply picking  up and chucking up holographic virtual gear in mid air instead of being hunched over a computer it was a perfect teaser into the future of gesture-based computing. What’s even more exciting is that most of this technology is already available and is set to go mainstream. Gesture-based computing is interacting with computers through nontraditional interfaces using the body instead of the mouse and the keyboard. It allows users to have no physical contact with a device and yet interact with it just as they would with traditional interfaces. The most widely used of gesture-based computing devices and already a huge commercial success is the Kinect. Thanks to some amazing software that could extrapolate missing body parts and even tell different users apart, it went on to become a hit among gamers looking for the next big thing to enhance their gaming experience. The Kinect works by being able to map a body and produce a digital reproduction of a body’s shape, skeletal outline and even facial details that gives developers access to unlimited possibilities for interfaces and applications.  Another big contender in the gesture computing revolution is the Leap motion. Leap motion takes gesture-based computing to finger precision perfection. It reads gestures within a 8 cubic feet volume and any motion of the hand or fingers can be tracked to 1/100th of a millimeter, heralding exciting possibilities about its use with applications that require a higher degree of accuracy.  Gesture-based computing is now ripe to be a part of gaming, TVs, devices, kiosks, medical, 3D sculpting, engineering, medical professionals, designers, advertisers and even people with physical disabilities.
2. The word “mainstream” in paragraph 1 is closest in meaning to ______

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Rachel Carson was born in 1907 in Springdale, Pennsylvania. She studied biology in college and zoology at Johns Hopkins University, where she received her master's degree in 1933. In 1936, she was hired by the US Fish and wildlife service, where she worked most of her life. Carson's first book, Under the Sea Wind, was published in 1941. It received excellent reviews, but sales were poor until it was reissued in 1952. In that year, she published The Sea Around Us, which provided a fascinating look beneath the ocean's surface, emphasizing human history as well as geology and marine biology. Her language had a poetic quality. Carson consulted no less than 1,000 printed sources. She had voluminous correspondence and frequent discussions with experts in the field. However, she always realized the limitations of her non-technical readers. In 1962, Carson published Silence Spring, a book that sparked considerable controversy. It proved how much harm was done by the uncontrolled, reckless use of insecticides. She detailed how they poison the food supply of animals, kill birds, and contaminate human food. At that time, spokes men for the chemical industry mounted personal attacks against Carson and issued propaganda to indicate that her findings were flawed. However, her work was vindicated by a 1963 report of the President's Science Advisory Committee.
3. When she published her first book, Carson was closest to the age of: 

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In the early decades of the United States, the agrarian movement promoted the farmer  as society’s hero. In the minds of agrarian thinkers and writers, the farmer was a person on whose well-being the health of the new country depended. The period between the Revolution, which ended in 1783, and the Civil War, which ended in 1865, was the age of the farmer in the United States. Agrarian philosophers, represented most eloquently by Thomas Jefferson, celebrated farmers extravagantly for their supposed centrality in a good society, their political virtue, and their Superior morality. And virtually all policy makers, whether they subscribed to the tenets of the philosophy held by Jefferson or not, recognized agriculture as the key component of the American economy. Consequently, government at all levels worked to encourage farmers as a social group and agriculture as economic enterprise.  Both the national and state governments developed transportation infrastructure, building canals, roads, bridges, and railroads, deepening harbors, and removing obstructions from navigable streams. The national government imported plant and animal varieties and launched exploring expeditions into prospective farmlands in the West. In addition, government trade policies facilitated the exporting of agricultural products.  For their part, farmers seemed to meet the social expectations agrarian philosophers had for them, as their broader horizons and greater self-respect, both products of the Revolution, were reflected to some degree in their behavior. Farmers seemed to become more scientific, joining agricultural societies and reading the farm newspapers that sprang up throughout the country. They began using improved implements, tried new crops and pure animal breeds, and became more receptive to modern theories of soil improvement. They also responded to inducements by national and state governments. Farmers streamed to the West, filling frontier lands with stunning rapidity. But farmers responded less to the expectations of agrarians and government inducements than to growing market opportunities. European demand for food from the United States seemed insatiable. War, industrialization, and urbanization all kept demand high in Europe. United States cities and industries grew as well; even industries not directly related to farming thrived because of the market, money, and labor that agriculture provided.
1. What does the passage mainly discuss?

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Botswana, officially the Republic of Botswana, is a country in southern Africa that shares borders with South Africa, Namibia and Zimbabwe. The capital, Gaborone, (1) _______ on the Notwane River in the South east of Botswana. The Kalahari Desert covers more than 70% of Botswana. The Kalahari isn’t a true desert because it rains more each year there than in most (2) _______ deserts. Despite this, Botswana is a dry country. When it does rain, the rain is often heavy and there are floods. Botswana is a popular tourist destination, with people from all over the world coming to see its amazing animals. During the seasonal floods, the land becomes a lush animal habitat. The wide variety of wildlife (3) __________ elephants and lions. Many visit Chobe National Park to see its 70,000 elephants, (4) __________ are the largest of all living elephants. The grassland and river valleys are home to giraffes, cheetahs, hyenas and wild dogs. The baobab tree, an icon of the African savannah, plays an important role in Botswana culture and nearly every part of it is useful. For example, it (5) __________ used to make rope and people pick the leaves to make soup

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We need to learn how to cook, wash the clothes at home. It’s _________.

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Working on the computer is very tough on your body, which is not used to this modern type of work. Sitting has long been known to cause back pain and negatively influence circulation, which can promote cardiovascular disease. Extensive use of the keyboard and mouse can lead to stiffening of the muscles in your hands, arms, and neck, as well as inflammation and injuries. Staring at a bright screen for too long can cause dry eyes and headaches. Finally, computer work can be stressful, isolating, and lead to depression and anxiety. In other words, working on the computer is as unhealthy a job as you can imagine. First and foremost, sitting for long stretches of time is a very serious health risk! Sitting affects your blood circulation, your back experiences a steady stress, you are more likely to drink and eat stuff that isn’t good for you, and you burn very little calories, making it more likely that you overeat. As a result, sitting contributes to a host of conditions, most notably gaining weight, diabetes, heart disease, cancer, and consequently a shortened life span. Second, bad posture causes pain. You can develop bad posture from anything you do habitually, whether it’s sitting, standing, or walking. Your daily activities have an impact on your body and shape your muscles; they either tighten or become weak. The typical consequences associated with bad posture while working on the computer are pain in the back, shoulder, and neck, often resulting in tension headaches. Third, staring at the screen causes eye strain. Staring at a bright screen for hours can lead to eye fatigue or eye strain, headaches, blurred vision, burning, itching or tearing eyes, and temporary vision disorders. Fortunately, eye strain rarely results in a permanent condition and symptoms can be prevented or cured rather easily. Last, but not least, emotional pressure and isolation cause anxiety and depression. Computers are very efficient tools in that they help us with getting more work done in less time. At the same time, you spend less face-to-face time with your colleagues, family, or friends. This can lead to isolation, anxiety, and depression, i.e. both physical and mental health issues. The symptoms are manifold and can include tense muscles, back pain, headaches, poor sleep (insomnia), increased or flat breathing, quickened pulse, and generally signs of stress, depression, or anxiety.  
2. The word “cardiovascular" in paragraph 1 means connected with _________

Mark the letter A, B, C, or D on your answer sheet to indicate the undelined part that needs correction in each of the following questions:
Most people think that lions only come from Africa. This is understandable because in fact most lions do come from there but this has not always been the case. If we went back ten thousand years, we would find that there were lions roaming vast sections of the globe. However now, unfortunately only a very small section of the lion's former habitat remains.
Asiatic lions are sub-species of African lions. It is almost a hundred thousand years since the Asiatic lions split off and developed as a sub-species. At one time the Asiatic lion was living as far west as Greece and they were found from there, but in a band that spreads east through various countries of the Middle East, all the way to India. In museums now, you can see Greek coins that

have clear images of the Asiatic lion on them. Most of them are dated at around 500 B.C. However, Europe saw its last Asiatic lions roaming free two thousand years ago. Over the next nineteen hundred years the numbers of Asiatic lions in the other areas declined steadily, but it was only in the nineteenth century that they disappeared from everywhere but in India.
The Gir Wildlife Sanctuary in India was established especially to protect the Asiatic lion. There are now around three hundred Asiatic lions in India and almost all of them are in this sanctuary. However, despite living in a sanctuary, which makes them safe from hunters, they still face a number of problems that threaten their survival. One of these is the ever-present danger of disease. This is what killed more than a third of Africa’s Serengeti lions in 1994, and people are fearful that something similar could happen in the Gir Sanctuary and kill off many of the Asiatic lions there.
India's lions are particular vulnerable because they have a limited gene pool. The reason for this is interesting is because all of them are descended from a few dozen lions that were saved by a prince who took a particular interest in them. He was very healthy, and he managed to protect them; otherwise they would probably have died out completely.
When you see the Asiatic lion in India, what you sense is enormous vitality. They are very impressive animals and you would never guess that they have this vulnerability when you look at them.

According to the passage, nowadays we can find the Asiatic lion .

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions:
If you were going to choose a job that involves travel, what would be your first choice? There are many jobs available today that give people opportunities to travel. Although may traveling careers sound fantastic, they also have disadvantages.
Being an au pair is an excellent way to not only go to different countries, but to live in different places around the world and really get a feel for the culture. Au pairs lives with the families they are placed with and take of children. Many parents include au pairs in family events and vacations, so they experience many aspects of the new culture while on the job. However, many of the activities are centered around the children, so they may not get to experience many things that interest adults.
For people who want a bit more freedom working abroad, being an English teacher maybe a good choice. There are English teaching jobs in almost countries in the world. People teaching English in other countries often have a chance to travel on the weekends around the country. One drawback is that many teachers often wind up hanging out with other English teachers, and they don’t have time to learn the country’s language.
The nickname “roadie” implies that this job involves life on the road. Roadies are people who work and travel with bands and provide technical support. Roadies can be lighting and stage crew who set up the stage and break it down before and after events. They can also be technicians helping band members with their instruments. International tours take a band’s crew to cities around the world, often requiring air travel. However, the crew doesn’t get much time off, so they may travel to several countries without seeing much besides concert venues and hotels.
Similarly, flight attendants often travel to cities around the world, but they don’t see much besides the inside of airplanes and hotels. However, when they do have time off, they can often fly at no cost, and family member can sometimes fly free as well. Its is widely thought that a flight attendant job is
glamorous, but flight attendants must deal with travel hassles, as well as security issues.
All jobs gave advantages and disadvantages whether or not you travel for work, so if you have the travel bug, keep these jobs in mind for the future.

Which of the following is something a roadie might do?

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Vietnam’s football team received a “rock-star” welcome in Hanoi yesterday, (1)_______ losing to Uzbekistan in the 2018 U23 Asian Championship Final. Thousands of supporters flocked to the streets from Noi Bai Airport to Hanoi’s city center to greet the team bus, (2)________the Vietnamese PM’s reception for the team by five hours. A home-coming celebration was also held at My Dinh National Stadium, where all 40,000 seats were filled with thousands more waiting outside to see the players. Their (3)______ at the U23 Asian Cup made the players “overnight celebrities in the football-crazy nation”, AFP wrote. Various Korean outlets, including Korea Times, Sportal Korea and Hani, have also expressed amazement at the way football fans have celebrated their national team’s achievement, and at the same time, hailed the team’s performance at the tournament (4)_____ “heroic” and “like a fairy tale”. According to Sportal Korea, the team made an “impressive achievement” at the Asian tournament. “The red flags were being waved everywhere on the streets, and the cheering went on until late,” Hani wrote. The Korea Times also added that Vietnam’s success at the Asian Cup had brought Vietnamese football and Korean football “closer”. More importantly, it is the success (5)_____unites the country on so many levels

Mark the letter A, B, C, or D on your answer sheet to indicate the undelined part that needs correction in each of the following questions:
A recent study shows that an unequal share of household chores is still the norm in many households, despite the fact that many more women now have jobs. In a survey of 1,256 people ages between 18 and 65, men said they contributed an average of 37% of the total housework, while the women estimated their share to be nearly double that, at 70%. This ratio was not affected by whether the woman was working or not.
When they were asked what they thought was a fair division of labour, women with jobs felt that housework should be shared equally between male and female partners. Women who did not work outside the home were satisfied to perform 80% - the majority of the household work - if their husbands did remainder. Research has shown that, if levels increase beyond these percentages, women become unhappy and anxious, and feel they are unimportant.
After marriage, a woman is reported to increase her household workload by 14 hours per week, but for men the amount is just 90 minutes. So the division of labour becomes unbalanced, as a man's share increases much less than the woman's. It is the inequality and loss of respect, not the actual number of hours, which leads to anxiety and depression. The research describes housework as thankless and unfulfilling. Activities included in the study were cooking, cleaning, shopping, doing laundry, washing up and childcare. Women who have jobs report that they feel overworked by these chores in addition to their professional duties. In contrast, full-time homemakers frequently anticipate going back to work when the children grow up. Distress for this group is caused by losing the teamwork in the marriage.

Although women think men should share the housework, those who don't have paid job agree to share of the chores.

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Spend just a minute watching the world population counter tick up on Worldometers and you’ll see just how quickly we’re swelling in numbers. The current figure stands at around 7.7 billion, and this is projected to become 9.8 billion by 2050, according to the UN. More people means more carbon footprints - more cars, waste and emissions, more houses and infrastructure to be constructed using the world’s limited resources, more mouths to be fed using more water and energy in food production. Governments recognise the severity of the situation and have mostly come together over global policies like the UN’s Paris Agreement, to limit carbon emissions and their impact on climate change. In addition, new technologies are being developed to make our use of resources more efficient. As for controlling population growth, the education of women is one key factor. Research shows the higher level to which a woman is educated, the fewer children she is likely to have. In Ghana, for example, women who have been to high school, have a fertility rate of between two and three children, compared with six for those who have no education. This could be for several reasons including learning about desired family size and understanding child health better. This means that the mother is more confident her children will survive. She is also likely to hold more sway within the family, arguing for fewer children if that is what she wants.  There is also plenty that individuals can do to reduce their personal footprint. Earth Overshoot Day is defined as the day when humanity has used up nature’s resource budget for the year. The Global Footprint Network calculates that moving Earth Overshoot day back by five days every year would mean that, by 2050, we’d be using the resources of less than one planet. Just eating 50% less meat and replacing it with vegetarian alternatives could save the planet five days. As David Attenborough says, if we want to save Earth, we can no longer afford to keep eating meat: “We are omnivores, so biologically, if you could have a biological morality, you can say, yes we evolved to eat pretty well everything. But now we’ve got to a stage in our own social evolution in which that is no longer practical.” Sir David says he himself now eats less meat and is bolstered by the knowledge that it’s helping the planet.  
3. According to paragraph 2, what is NOT mentioned as the cause of rise in the amount of CO2 emission?

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Whether a species is endangered—meaning at risk of extinction—depends on which definition you use. The International Union for Conservation of Nature’s Red List of Threatened Species classifies an animal as endangered when its numbers in the wild have dropped so low that it’s at “extremely high risk” of extinction. Meanwhile, the United States’ Endangered Species Act of 1973 takes into consideration any destruction to a species’ habitat, whether it has been over-consumed, any disease or predation that threaten it, whether any other man-made factors put it in danger, and what policies currently exist to protect it. When members of the public or a state agency propose to the U.S. Fish & Wildlife Service or the National Marine Fisheries Service that a species be listed as endangered under the law, research and management plans are formed to help those species survive. It is illegal under the Endangered Species Act to capture, hunt, shoot, or otherwise harm an animal that’s listed as endangered. Sometimes, federal agencies decide that although a species could be considered endangered, other species are higher priorities. In those cases, the animal or plant gets limited protections. One animal whose numbers have increased through conservation is the bald eagle. There were only about 500 bald eagles in the continental United States in the 1960s because of pesticides that damaged the shells of their eggs. Conservation efforts including captive breeding programs, habitat protection, and a ban on the insecticide DDT helped the bald eagle’s numbers soar back into the thousands. Another is the giant panda, which was declared no longer endangered in 2016 thanks to 50 years of efforts to save it. U.S. Rep. John Dingell, who wrote the Endangered Species Act, argued that “only natural extinction is part of natural order.” Scientists believe that 227 species - including the grizzly bear, the peregrine falcon and the gray wolf - were saved from extinction in the first 33 years of the law’s existence. Still, critics argue that the act is expensive and ineffective because it protects so many species. Several federal courts have heard and rejected arguments that the Endangered Species Act is unconstitutional, and members of Congress have tried to weaken the law in small ways.
6. Which of the following statements is TRUE, according to the passage?

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In an educational context, the term “learner independence” has gained increasing importance in recent years. It is of particular (25) ________ to language learning and commonly refers to the way students confidently control and organize their own language learning process. While some people seem to have an almost (26) ________ flair for languages, others have rely on strategies to maximize their skills and learn a foreign language more effectively. The main thing to remember is that becoming a truly independent learner ultimately depends above all on taking responsibility for your own learning and being prepared to take every opportunity available to you to learn. You also increase your chances of (27) ________ by learning according to your own needs and interests, using all available resources. Research shows that learners (28) ________ adopt this approach will undoubtedly manage to broaden their language abilities considerably and, (29) ________, are more likely to achieve their objectives in the longer term

Choose the best answer:
Deforestation _________ destroying Earth’s plant and animal variety.

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The Sahara Desert is the world’s largest hot desert. The Sahara is in North Africa and is as large as the United States. Many people think that an area like this has no animals or plant life, but they are (1) __________. In fact, the Sahara Desert has many different ‘ecoregions’. Each ecoregion has different plants and animals (2)_________there. The biggest ecoregion is called the ‘Sahara Desert ecoregion.’ In this area, the climate is extremely dry and extremely hot. The landscape is sandy and dusty with many high dunes. Because the Sahara Desert ecoregion is so hot and dry, there are very few plants and animals. Scientists estimate that there are only 500 species of plants. This is not very much when thinking of (3)_________ enormous the region is. These plants include acacia trees, palms, spiny shrubs, and grasses. The Sahara is also home to 70 species of mammals. Twenty of these are large mammals. There are about 90 species of birds and around 100 reptiles. The biggest threat to plants and animals in this environment is drying (4)_______. Because of this, plants have the ability to recover their health after their leaves have dried out completely. Animals can lose 30-60% of their body mass and still survive. Most animals do not get their water from drinking like other ecosystems. Instead, they have adapted to get their water through metabolic processes. This is why they can survive in a place (5)______ the Sahara Desert ecosystem