2. digging down from the surface, you find (from top to bottom) unsaturated sand, saturated sand, saturated clay, and saturated gravel. based on the hydraulic conductivities, it is reasonable to assume that these form an unconfined aquifer, a confining layer, and a confined aquifer.
group of answer choices

true

false

true

Explanation:

True

Saturated sand, unsaturated sand, saturated clay and saturated gravel form unconfined and confined aquifer and confining layers.

Aquifer are nothing but water bearing stratum of permeable rock sand or gravel. Aquifers can be found at various depth. saturated means the pressure head of water is greater than the atmospheric pressure.And unsaturated is when water head is less than the atmospheric head.

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explanation: