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 questions :
It has been said that the wars of the future will not be fought over land. Instead, they will be fought over the water supply. As the climate changes due to global warming, weather (1)__________ all over the world are becoming disrupted. In some regions, there will be too much water, causing extreme flooding. On the other hand, the (2)_________ will be true in other areas, where drought and famine will take place instead. Climate change is not the only reason why there will be serious problems (3)_________ water. Already, man-made projects such as the damming of rivers have caused (4)_________ to rise between nations. Since rivers can only flow in one direction, if you live in a country that relies heavily on river water for its water supply but live downstream from another country, that other country, (5)___________, controls the water supply

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