Rain forests cover less than six percent of the earth’s area, but they have 100,000 kinds of all the kinds of plants on the earth. Three-fourths of known kinds of plants and animals call the rain forest their home. Twenty percent of our different kinds of medicine comes from rain forests. The glues on an envelope and in shoes come from tropical plants. Rain forests provide materials for hundreds of other products.

Rain forests are also very important to the world’s climate. The Amazon rain forest alone receives about thirty to forty percent of the total rainfall on the earth and products about the same percentage of the world oxygen. Some scientists believe that the decreasing size of rain forests will affect the climate on the earth, making it uncomfortable or even dangerous for life.

Saving rain forests is an international problem. One country, or even a few countries, cannot solve the problem alone. The nations of the world must work together to find a solution before it is too late.

According to the passage, what must the nations of the world do to find a solution?

Câu hỏi liên quan

• Where did Marianne Moore grow up?

• What does the passage mainly discuss?

• Which of the following is NOT discussed as an ability animals are thought to have?

ZUNIA12

• It can be inferred from the passage that limestone deposits serve as the basis of ...........

• The word it refers to _________.

• In the first paragraph, the word “emerged” is closest in meaning to____.

• The Beatles stopped their live performances because .............

• The word "vulnerable" in paragraph 4 is closest in meaning to .............

• In the Middle East, people do not use their left hands for eating because they use their left hands ................

• The word “classic” in paragraph 3 is closest in meaning to ............

• The word ‘monumental’ in Paragraph 2 means ..............

• Ten thousand years ago, ................

• Which of the following is right according to the passage?

• Co-education was negatively responded to in .................

• According to the passage, which of the following factors might spoil the tourists’ fun at Mediterranean resorts and beaches?

• The word “them” in the last paragraph refers to _____.

• The pronoun "they" in the second paragraph refers to ..........

• How did Juliette Davidson benefit from the experience of her first job?

• According to the passage, what causes the unique color and look of hummingbirds?

• Which of the following could be considered a cause of the distress signals of trees?