A: Ground water, which is in aquifers below the surface of the Earth, is one of the Nation's most important natural resources.
(A: Ground water; is; in aquifers below the surface of the Earth) (A: Ground water, which is in aquifers below the surface of the Earth; is; one of the Nation's most important natural resources)
A: Ground water A: Ground water, which is in aquifers below the surface of the Earth
is is
in aquifers below the surface of the Earth
one of the Nation's most important natural resources