Question

which describes a way that prevailing winds control precipitation totals in a region? they cause oceanic winds to carry water vapor. they force cool, moist air from oceans to rise as it moves toward land. they increase the occurrence of droughts in the winter. they reduce rainfall on the leeward side of a mountain.

Explanation:

Prevailing winds influence precipitation by interacting with topography. When moist prevailing winds hit a mountain, they rise, cool, and release rain on the windward side. By the time the winds reach the leeward side, most moisture is lost, resulting in reduced rainfall (a rain shadow effect). The other options are incorrect: oceanic winds naturally carry vapor independent of prevailing wind control, cool moist air rising toward land is related to sea breezes not prevailing wind control, and prevailing winds do not specifically cause winter droughts as a direct precipitation control mechanism.

Answer:

D. They reduce rainfall on the leeward side of a mountain.