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AP® Environmental Science

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Moderate

Natural Fertilization

APES-KVLHSK

A farmer analyzes the quality of his soil and determines it is lower in nitrogen than he would prefer.

Instead of using organic or synthetic fertilizer, what could he do to increase the levels of nitrogen?

A

Add large limestone rocks between the rows of his crops.

B

Increase the frequency of irrigation.

C

Plant legumes between the rows of his crops.

D

Remove any organic material that builds up between the rows of crops

E

Decrease the frequency of pesticide use