state gov BPSC Assistant Revenue & Accounts Officer Test Series 2025 General Knowledge Geography (World Geography) Biogeography
Which of the following most affect the rate of humus formation in the soil?
1. Flora, fauna and microorganisms
2. Characteristics of parent rock
3. Slope of soil
4. Minerals in the soil
Which of the following statements given above is/are correct?
1
1 and 2 only
2
2 and 3 only
3
1 only
4
1, 2, 3 and 4