UPSC Civil Services Prelims 2013
Question 32 of 64Geography
Which of the following adds 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:
A1 only
B2 and 3 only
C1 and 3 only
D1, 2 and 3
Correct Answer
The correct answer is hidden
Explanation
19 words hidden ... Burning coal does not add useful nitrogen to soil in the agricultural sense intended here. Thus, Statements 1 and 3 are ... 18 words hidden