The diagram below shows a side view of several layers of rock below
Earth's surface. Which rock layer provides the best long-term storage
of groundwater?
Select one:
Layer III
Layer II
Layer I
Layer IV

layer III

Explanation:

high porosity and low permeability provides the best long-term storage

the answer is tropical areas. the tropical areas obtain more

radiant energy from the sun than they lose to space through terrestrial

radiation, and vice versa for polar areas. earth has an energy remaining in the

tropics and an energy scarcity for the polar areas.

explanation:

the index of refraction of the second medium is higher. i just took the test trust me !