A. incorporating urea into their bodies
B. fixing atmospheric nitrogen into the soil
C. decomposing plant and animals remains
D. decreasing the pH value of the soil
Correct Answer: Option B
B. fixing atmospheric nitrogen into the soil
A. incorporating urea into their bodies
B. fixing atmospheric nitrogen into the soil
C. decomposing plant and animals remains
D. decreasing the pH value of the soil
Correct Answer: Option B
B. fixing atmospheric nitrogen into the soil
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