Test: AP Environmental Science

1.

Which of the following best describes a confined aquifer? 

An aquifer that is sealed off by manmade efforts (e.g. concrete) to limit percolation of water

An aquifer that can only be recharged by precipitation

An aquifer where percolation occurs, but only upward toward above-ground sources

An aquifer that is surrounded by an impermeable bedrock or clay

An aquifer that has been contaminated by pollutants or pathogens and must be sealed off through manmade efforts to prevent contamination to other water tables through percolation

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