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
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