Ch. 3 Soil

Definition Vocab Word
The decayed remains of dead plants and animals in soil. Humus
The layer of bits of rocks and humus found on Earth's crust. Soil
A type of soil with very small grains and small spaces between them. Clay
The top layer of soil. Topsoil
Rich soil with lots of humus. Loam
A material found in nature that living things use. Resource
Saving resources by using them carefully. Conservation
Planting strips of different crops next to each other. Strip Cropping
Planting rows of crops around hills instead of up and down their sides. Contour Plowing