Which term means a volume of a certain rock type of a specific age? x geologic map
geologic unit
contact
O fault line

The answer is geologic unit

ok

Explanation:

explanation:

on disadvantage of hydroelectric power is the cost. another disadvantage of using hydroelectric power is finding a water source powerful enough to harvest hydroelectric power.

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.