Aregion of land whose surface is permeated with water is best known as a(n)
a.

piedmont
b.

tributary
c.

wetland
d.

estuary

C. wetland

Explanation:

A wetland is an area of land, generally flat, whose surface is permanently or intermittently flooded.When regularly covered with water, the soil becomes saturated, becoming depleted of oxygen and giving rise to a hybrid ecosystem between purely aquatic and terrestrial Considering that the fundamental concept of a wetland or wetland is not water as such but rather "humidity", we can speak of "wet ecosystems" interdependent of water, whether surface or underground.

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