Understanding Soil

Front

Soil Erosion

Back

Wearing away of topsoil

Front

Causes of Erosion

Back

Wind, water, human activity

Front

Effects of Erosion

Back

Loss of nutrients, land degradation

Front

Preventing Erosion

Back

Plant cover, terracing

Front

Weathering

Back

Breakdown of rocks

Front

Organic Matter

Back

Decomposed plants and animals

Front

Soil Layers

Back

Topsoil, subsoil, bedrock

Front

Humus

Back

Rich organic component

Front

Soil Conservation

Back

Protecting soil from erosion

Front

Crop Rotation

Back

Changing crops to preserve soil