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5 votes
Aquifers are

A. structures used to transport water from city to city

B. created through evapotranspiration

C. densely packed snow close to becoming glaciers

D.
layers of porous rock or sand

User Geohei
by
8.7k points

1 Answer

4 votes
d. layers of porous rock or sand

User Jordan Enev
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7.5k points