Millionaire Mode

Soil Organic Matter and Humus

Question 1 of 15

What is the primary source of soil organic matter?

  1. Plant residues
  2. Animal manure
  3. Microorganisms
  4. All of the above

Prize Money

15₹7 Crores
14₹1 Crore
13₹50,00,000
12₹25,00,000
11₹12,50,000
10₹6,40,000
9₹3,20,000
8₹1,60,000
7₹80,000
6₹40,000
5₹20,000
4₹10,000
3₹5,000
2₹2,000
1₹1,000