Which is the correct description of a thermocline?

a.
an area of the ocean that separates water based on the mass of its dissolved minerals

b.
an area of the ocean that separates the warm surface waters from the colder deep waters

c.
a horizontal area that separates the top layer of high nutrient ocean water from the low nutrient ocean water below

d.
a vertical area of density change that occurs when temperature and salinity change

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.