Which one of the following is a step in the formation of soil?
A. Earthquakes or volcanic eruptions
B. Weathering of rocks
C. Addition of humus
D. All are involved in the formation of soil
Answer:D
Which one of the following is a step in the formation of soil?
A. Earthquakes or volcanic eruptions B. Weathering of rocks C. Addition of humus D. All are involved in the formation of soil