Soil Erosion and Conservation

Two main forces of erosion are:

• rain and snow.

• wind and water.

• sunlight and wind.

• pH and salinity.

This may lead to soil erosion

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Plants and trees hold the soil together by their_______

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How can farmers prevent soil erosion?

• Cover their crops with a tarp.

• Water the soil everyday in order to weigh it down

• Plant crops to hold the soil in place.

• Cut down all of the trees and crops.

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Soil conservation includes all of the following EXCEPT_______.

• Desertification

• Building Embankments along the rivers

• Terrace farming

• Crop rotation

Which type of soil conservation strategy is being used in this picture?

• Windbreakers

• Crop rotation

• Planting of vegetation

• Terrace Farming

Cutting down of trees____________________

• Afforestation

• Forestation

• Deforestation

• Conservation

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Human activities that increase soil erosion include

• mining

• overgrazing by cattle

• afforestation

• Both mining and overgrazing by cattle

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A wall or fence of earth or stone built to prevent a river flooding an area is known as

• Barrier

• Step farming

• Dam

• Embankment

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Trees and bushes are grown along the boundary of fields and open spaces because

• They increase the speed of wind,and prevent soil erosion.

• They act as wind barriers and prevent soil erosion.