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Biology, 21.01.2021 03:00 lizzieee04

A city worker is trying to dig to reach the water table. She knows the unsaturated zone in the area is four feet thick and the saturated zone is another five feet thick before an impermeable granite layer is reached. How deep will she have to dig to reach the water table?
two feet
four feet
five feet
nine feet

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A city worker is trying to dig to reach the water table. She knows the unsaturated zone in the area...
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