Soil

largest grains (particles), water leaves quickly, gritty

• sand

• humus

• clay

• nutrients

top layer of soil made up of broken down pieces of dead plants and animals

• sand

• humus

• clay

• nutrients

smallest grains (particles), holds water, sticky when wet

• sand

• humus

• clay

• nutrients

materials that plants and animals need to grow

• sand

• humus

• clay

• nutrients

solid, non-living substances found in rock and soil

• mineral

• humus

• clay

• nutrients

The layer under humus that is dark brown, and where plants and animals live

• topsoil

• subsoil

• parent material

• bedrock

The layer of soil beneath the topsoil that contains mostly clay, rocks, and minerals.

• topsoil

• subsoil

• parent material

• bedrock

made up of mostly large, weatherd rocks

• topsoil

• subsoil

• parent material

• bedrock

The solid layer of rock beneath the soil

• topsoil

• subsoil

• parent material

• bedrock

soil made up of very small broken pieces of rock

• silt

• loam

• soil

• clay