Fill in the Blanks Soil Layers Online version Students must fill in the blanks of different soil definitions by Jaeda Branch 1 layer grows under inorganic litter the organic the under organic humus bedrock material minerals material topsoil layer parent plants This is the very top . It includes leaf and other decomposing material such as dead animals and . This is the layer . It is made of both and inorganic material mixed with . It is where the roots of the plant . This is . It is mostly made up of like sand , silt , and clay . This is the and is found under the subsoil . It is made up of larger rocks . It is the for soil .
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