how does each layer ( humus, sand, gravel, clay) support life on Earth. please answer the right answer
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Answer:
Soil is composed of living, nonliving, and once living components. Students discover these materials as they get their hands dirty in a bucket of soil. Students then study the differences between humus, sand, and clay. They will observe these samples dry, wet, and in settling tubes.Soil is the top layer of most of our earth. Soil is partly made up of decaying plant or animal remains. These are called organic matter or humus and contain the living and once living components of our soil. Soil mostly contains pieces of disintegrating rocks or inorganic matter, water, and air. The differing amounts of inorganic and organic material in a soil sample provide for the different types of soil that we have.
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