How do mountains influence climate?
a. they moderate climate.
b. they cause less precipitation to fall.
c. they affect rainfall by creating a rain shadow.
d. they do not affect climate

The correct answer is c. They affect rainfall by creating a rain shadow. Basically, rain falls down and when it wants to go over a mountain it condenses and creates clouds. These don't go over the mountain and the area next to the mountain is dry. This is called a rain shadow.

How do mountains influence climate? C. THE AFFECT RAINFALL BY CREATING A RAIN SHADOW

They both determine the exact age of rocks.