Week 22 Vocabulary

living and dead organisms

• loam

• organic matter

• topsoil

• soil

rich, fertile soil that is made up of equal parts of clay, sand and silt

• topsoil

• humus

• subsoil

• loam

layer of soil that differs in color and texture from the layers above and below it

• horizon

• bedrock

• soil

• subsoil

soil organisms that breaks down the remains of organisms and digest them

• bedrock

• soil

• decomposers

• horizon

mixture of humus, clay, and other minerals that forms the crumbly topmost layer of the soil

• soil

• topsoil

• humus

• bedrock

solid layer of rock beneath the soil

• bedrock

• humus

• subsoi

• topsoil

soil under the topsoil that contains clay and other minerals

• soil

• topsoil

• humus

• subsoil

loose weathered material on Earth's surface in which plants can grow

• soil

• soil conservation

• bedrock

• topsoil

management of soil to prevent desctruction

• soil conservation

• soil

• horizon

• decomposers

dark colored organic material in soil

• topsoil

• humus

• decomposers

• loam