Question

(12) What plays an important role in polluting agricultural
land and environment?
A. Tractors
B. Chemical fertilizers
C. Drip-irrigation system D. Animals and birds

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Answer 1

Answer:

B) chemical fertilizers

Explanation:

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Answer 2

Answer:

Soil erosion and sedimentation

Agriculture contributes greatly to soil erosion and sediment deposition through intensive management or inefficient land cover. ... Sedimentation also affects the transport and accumulation of pollutants, including phosphorus and various pesticides.

Agricultural pollution has many different sources. Nitrogen-based fertilizers produce potent greenhouse gases and can overload waterways with dangerous pollutants; chemical pesticides with varying toxicological effects can contaminate our air and water or reside directly on our food.

In the United States, farms are responsible for more than 90 percent of airborne ammonia pollution, mostly from fertilizers and livestock manure. Meanwhile, the EPA estimates that the agricultural sector contributes about 9 percent of total US global warming emissions.

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