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10 Cards in this Set
- Front
- Back
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soil
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the loose material in which plants can grow in the upper layer of the earth
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humus
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the part of the soil made up of decayed parts of once living things
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topsoil
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the top layer of soil made up of the smallest grains and the most humus
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bedrock
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the soild rock that is under the soil
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clay
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a type of soil made up of very small grains; it holds water well
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loam
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a type of topsoil that is rich in minerals and has lots of humus
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resource
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a material that is found in nature and that is used
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conservation
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the saving of resources by using them carefully
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strip cropping
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a type of planting that uses strips of thick grass or clover between strips of crops
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contour plowing
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a type of plowing for growing crops; creates rows of crops around the sides of a hill instead of up and down
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