soil - the loose, weathered material on Earth's 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 the soil supports plant growth, loam - soil that is made up of equal parts of clay, sand, and silt, pH scale - measures acidity of soil, soil horizon - layers of soil that differ in color and texture from the layers above or below it, topsoil - the crumbly topmost layer of soil which contains humus, A horizon, subsoil - layer of soil below topsoil that has less organic material , B horizon, decomposer - organisms that break the remains of dead organisms into smaller pieces,

Wordwall 4.2 Vocabulary

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