2nd October 2019

mpasd
18

How is soil formed in steps?

Soil is a loose mixture of rock fragments, organic matter, water, and air that can support the growth of vegetation. The first step in soil formation is the weathering of parent rock into smaller pieces. Eventually, very small particles from parent rock are mixed in with organic matter to form soil.

What is topsoil and why is it important?

At its most basic, top soil is the top layer of soil, in which all plants grow. Topsoil is so important because it contains all the nutrients that plants need to survive.

How long does it take for an inch of topsoil to form?

500 years
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