A. Addition of nitrates to the soil
B. Aeration of the soil
C. Removal of harmful bacteria from the soil
D. Addition of rain water to the soil
Correct Answer: Option A
A. Addition of nitrates to the soil
A. Addition of nitrates to the soil
B. Aeration of the soil
C. Removal of harmful bacteria from the soil
D. Addition of rain water to the soil
Correct Answer: Option A
A. Addition of nitrates to the soil
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