You can use process of elimination here. The atmosphere is a key component for the air we breathe. The atmosphere protects us from harmful objects and rays. Finally, warm air has more moisture in it than cool air (for example why generally hot places are so humid).
Answer:
A. focuses on trade between developing countries.
Explanation:
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Greece was really rocky and supported growth of only a few crops,so they did trading to obtain food.
Answer:In China the one child policy was used to limit the growth in the county. This law was enforced by fines based off of the family's income.
Explanation:
C) People become unemployed and cannot get services they need.
Factories provide jobs which keeps unemployment rates down. They make thosands of jobs worldwide so, when European countries removed these factories it made the unemployment rates skyrocket.