Answer :
quifers are underground layers of rock that are saturated with ... Most of the world's freshwater — about 69 percent — is locked away in glaciers and ice caps. ... The same problem is increasingly found throughout the world, ...
quifers are underground layers of rock that are saturated with ... Most of the world's freshwater — about 69 percent — is locked away in glaciers and ice caps. ... The same problem is increasingly found throughout the world, ...