Question

(c) Both of these
(a) NUITY
18. The minimum time needed for the formation of one inch of
top soil is
(b) 50 years
(a) 200 years.
(a) 10 years
(C) 100 years​

Answer 1

It takes atleast 100 years for the formation of one inch of top soil

Factors affecting the formation of top soil

When a soil deposits somewhere, it happens as a result of five major factors

• Climate
• Time
• Topography
• Material
• Activities or organism

All of these factors collectively decide how long will it take for the soil to deposit at a certain location.

For example, an area that involves too much human activity will keep eroding. Hence, it will take longer to get deposited.

Time taken for the formation of top 1 inch of soil

• As a result of all of the factors discussed above, the duration for the deposition of top layer of soil can not be stated clearly.

• However, scientists found out that it takes atleast 100 years to deposit top 1 inch of soil.