Which of the following adds/add nitrogen to the soil?
1. Excretion of urea by animals
2. Burning of coal by man
3. Death of vegetation
Select the corr

Question

Which of the following adds/add nitrogen to the soil?
1. Excretion of urea by animals
2. Burning of coal by man
3. Death of vegetation
Select the correct answer using the codes given below:

Accepted Answer

(C) 1 and 3 only

Answer

(A) 1 only

Answer

(B) 2 and 3 only

Answer

(D) 1, 2 and 3