The agent of mechanical weathering in which rock is worn away by the grinding action of other rock particles is called

Ice wedging causes mechanical weathering of rock by means of

What kind of weathering causes the mineral composition of rocks to change?

A hot and wet climate causes weathering to take place

Soil formation begins with the weathering of

Soil that is rich in humus has high

Living organisms in soil help to

Decomposers are the soil organisms that

How long did it take for the thick, fertile soil of the North American prairies to develop?

What term describes the management of soil to prevent its destruction?

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