Answer:
The correct answer is option B) runoff of pesticides into streams and lakes.
Explanation:
The nitrogen cycle is the process in which atmospheric nitrogen is fixed to the soil naturally. Agriculture fertilizer is help in adding nitrogen to the soil directly that affect the nitrogen cycle positively.
The nitrogen cycle also affected by the waste and sewage farming as it produces the nitrogen by the process of decomposing. this is also affecting the nitrogen cycle positively. Removal of the bacteria from the soil by irrigation also affects the nitrogen cycle.
Thus, the correct answer is option B) Runoff of pesticides into streams and lakes.
