Science Work

unit 24:SOIL
Soil is a mixtureof decayed plants and animals,and small pieces of broken rocks,such as sand,silt and clay.The rocks are broken as a result of a process called Weathering.

Weathering is brought about by various agents in our environment,such as:
-Wind
-Waves
-Plants and Animals
-Frozen Water
-Water
-Heat from the Sun
-Human Activities


~SOIL EROSION~
The removal of soil by wind and rain is called soil erosion.Soil erosion occurs when soil gets blown by the wind or washed away by water.

The occurrence of the soil erosion depends on farious factors such as:
-Speed and Volume of running water.
-Amount of vegatation.
-Slope of land.
-Dryness and size of soil particles.