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SOIL

TermDefinition
soil a loose mixture of rock fragments, organic material, water, and air that can support the growth of vegetation
parent rock a rock formation that is the source of soil
bedrock the layer of rock beneath soil
infiltration ability of water to move through soil
soil fertility a soil's ability to hold nutrients and to supply nutrients to a plant
humus the dark, organic material formed in soil from the decayed remains of plants and animals; rich in the nutrients plants need to be healthy
horizons a series of layers of soil, with humus rich soil on top, sediment below that, and bedrock on the bottom; the layers are horizontal
leaching the removal of substances that can be dissolved from rock, ore, or layers of soil due to the passing of water
top soil top layer of soil that contains more humus than the layers below it
Created by: jaguarscience
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