The troposphere is hotter near the Earth's surface because heat from the Earth warms this air. As the altitude increases the number of air molecules decreases, the average of their kinetic energy decreases.
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C.
It is d, becuase you divide 500 by 15, and that is the closest answer
Answer:
the process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth.
