Question

aquifers represent an important source of freshwater for humans. which describes how the supply of water in an aquifer is replenished?
a. water on the surface infiltrates into the ground and enters the aquifer.

b. ocean water enters the aquifer from underground.

c. water deep in the core of the earth constantly replenishes the aquifer.

Explanation:

An aquifer is a body of permeable rock that can contain or transmit groundwater. The water in an aquifer is replenished by the process of infiltration, where water from the surface (like from rain, rivers, etc.) seeps into the ground and enters the aquifer. Option B is incorrect because ocean water is saline and does not directly enter aquifers (aquifers hold freshwater, and ocean water would need to go through desalination or other processes, which is not the main replenishment method for most aquifers). Option C is incorrect because water from the Earth's core does not replenish aquifers; the Earth's core is molten and not a source of freshwater for aquifers. So the correct description is that water on the surface infiltrates into the ground and enters the aquifer.

Answer:

A. Water on the surface infiltrates into the ground and enters the aquifer