3.His list, in descending order of importance, was: energy, water, food, environment, poverty, terrorism and war, disease, education, democracy, and population. (Para. 4)
A. His list contains ten items: energy, water, food, environment, poverty, terrorism and war, disease, education, democracy, and population. They are arranged in such a way that each item is more important than the one that follows it.
B. The ten items on his list---energy, water, food, environment, poverty, terrorism and war, disease, education, democracy, and population---are gradually losing importance now.
4.The reason energy and water sit at the top, ahead of food and poverty, is that addressing them makes subsequent problems easier to deal with. (Para. 5)
A. Energy and water are the top two problems on the list. The reason is that if we start to solve these problems, the other problems that follow them on the list, such as food and poverty, will be easier to deal with.
B. Energy and water are listed as the two problems more important than food and poverty. This is because once we start working on them, addressing food shortage and poverty will be easier later on.
5.… even though fixing water would help our energy, defense, and health problems. (Para. 9)
A. … even though solving the water problem would help solve energy, defense and health problems.
B. … even though using water in an economical way would help solve energy, defense and health problems.
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