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5 Cards in this Set

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  • Back
How is soil made?
Rock weathering-(rain,wind,ice)
Weathers away at rocks, mixes with nutrients, to make rock particles.
How long does it take to make soil?
200-400 years
Why is soil important?
Its important because it provides life to plants which creates oxygen, homes for animals, stores water, and gets nuitrients.
What are the layers of the ground?
Humus (decayed plants and animals
--------------------------------
Topsoil (dark)
-plant roots
-animals
--------------------------------
Subsoil
-oxygen
-plant roots
-water
--------------------------------
Bedrock (paret rock)
-plant roots
-water
How is soil being distoyed?
Agriculture-
-takes out nuitrents by digging
-goats (eating everything)
Defornatation-
-using firewood
-cutting down trees