Four Major Components of Soil
Once you step out onto a piece of ground, you step out
onto something that is alive. Soil is not just a piece of
dirt. Soil is made up of living and nonliving material spread
as a very thin layer over the entire surface of the planet
we call earth.
Soil must provide nutrients, water, and air and helps
to support the plant.
Soil is a combination of materials. One part of soil is
rock that has been broken down over time by wind, water,
and chemical processes. Another material is called organic
matter. It is made up of decaying plant and animal matter.
Water and air are the other ingredients in soil. In a good
garden soil, about 45 percent will be rock particles, 5
percent organic matter like leaves, 25 percent water, and
25 percent air.
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