The area of land where water is drained downhill into a body of water is known as a drainage basin, or

answer; i believe that the correct answer is (lung);

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.

1) a

2)c

3)a

4)c

5)b

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geographic isolation