Tag: the soil

Which of the following measures are effective for soil conservation in India?
1. Avoiding crop rotation
2. Afforestation
3. Encouraging the use of chemical fertilizers
4. Limiting shifting cultivation
Select the correct answer from the codes given below.

Which one of the following factors is responsible for excessive soil erosion in Chhotanagpur plateau?

Which one of the following is the main reason for the loss of the top soil in India?

Soil erosion in India occurs in almost all the littoral states but it is most serious along the coast of ____________.

In India, the problem of soil erosion is associated with which of the following?
1. Terrace cultivation
2. Deforestation
3. Tropical climate
Select the correct answer using the codes given below.

Soil erosion can be prevented by _________.

Which among the following within processes helps in evolution?
1. Natural selection
2. Adaptation
3. Mutation
4. Reproductive isolation

Consider the following statements and choose the correct answer from the codes given below.
1. Soil erosion is the destruction of the upper layer of the soil by natural factors.
2. General erosion is one when there is 25% less erosion of the land soil.
3. Sheet erosion is caused when the upper fertile layer of the land is eroded by air or water.

Government of India encourages the cultivation of sea buckthorn. What is the importance of this plant?
1. It helps in controlling soil erosion and in preventing desertification.
2. It is rich source of biodiesel.
3. It has nutritional value and is well adapted to live in cold areas of high altitude.
4. Its timber is of great commercial value.
Which of the statements given above is/are correct? 

Which is the main causative factor of desertification