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earth science week 1 elementary school 1 k-3 1 k-4 k-5 geosource 1 soils 1
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Soil scientists often examine soils and record soil data outside. Soil is not just topsoil; it includes other horizons (soil layers) underneath the topsoil. So soil scientists use shovels or soil augers to get samples of many soil horizons. They record soil colors, textures, and types of living...
Grade Level   K 1 2 3 4
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