Question

Why does air pressure decrease from the troposphere to the exosphere?

A. because there are fewer air molecules as altitude increases
B. because there are more air molecules as altitude increases
C. because there are higher temperatures as altitude increases
D. because there are lower temperatures as altitude increases

Answer 1

C. Because there are higher temperatures as altitude increases.. .

explain: The troposphere gets its heat from the ground, and as the temperature decreases with altitude.