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science vocab words

10/23/16-10/27/16 science vocab words for my science teacher Mrs. Hydye

Soil The loose weathered material on Earths surface in which plants can grow.
Bedrock The solid layer of rock beneath the soil.
Humus Dark-colored organic material in soil.
Fertility A measure of how well soil supports plant growth.
Loam Rich fertile soil that is made up of about equal parts of clay,sand and silt.
Topsoil Mixture of Humus,clay and other materials that form the crumbly top most layer of soil.
Subsoil The layer beneath the topsoil that contains mostly clay and other materials .
Litter The loose layer of dead plant leaves and stems on the surface of the soil.
Decomposer Soil organisms that breaks down the remains of organisms and digests them.
Soil horizon The layer of soil that differs in color and texture from the layers below.
Soil conservation the magnet of soil to prevent its destruction.
Created by: dalton765