The mineral and organic materials on the surface of the earth is:
Soil
Gravel
Rocks
Humus
Protection of soil from erosion is called:
Comparison
Conservation
Preservation
Prevention
Why is soil important?
Because it provides home for animals
Because we need soil to live
Because of its ability to let plants grow in it
Because animals need soil to grow
How is soil formed?
By breaking down of mountains
By breaking down of hills
By breaking down of stones
By breaking down of rocks
The upper layer of the soil is called the:
Top soil
Subsoil
Parent soil
Bedrock
Strong winds cause soil:
Erosion
What is the process of planting trees in place of trees that are cut down called?
Deforestation
Afforestation
Reforestation
Reinstation
The processing of wearing away of rocks is called:
Weathering
Watering
Breaking
Squeezing
Planting of trees in large scale on open land is known as:
Rein station
What is afforestation?
Planting of trees
Cultivation of crops
Disappearance of forests
Depletion of forests