Soil

Cutting down of trees on a large scale are known as _______________.

• deforestation

• afforestation

• reforestation

Which of the following is not a reason for soil pollution ?

• Using Facebook

• Using chemical fertilisers

• Using chemical pesticides

Which of the following can prevent soil erosion ?

• step farming

• making embankments

• both

Which is the uppermost layer of soil ?

• topsoil

• subsoil

• bedrock

Which of the following is an agent of soil erosion ?

• sandy soil

• water

• heat

Soil is formed by _____________ of rocks

• binding

• weathering

• joining

Top soil contains _____________

• salt

• humus

• sugar

Farming on slopes is called ______________

• step farming

• ladder farming

• side farming

Which animal live inside the soil by making holes ?

• snakes

• dogs

• cats

Preventing the soil from being washed away is known as _________________.

• soil conservation

• soil erosion

• soil pollution