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प्रश्न
How can we prevent the loss of topsoil?
उत्तर
Loss of topsoil can be avoided by:
- increasing vegetation cover.
- reducing tree fall.
- preventing animal overgrazing.
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संबंधित प्रश्न
How is soil formed?
What are the methods of preventing or reducing soil erosion?
We know that many human activities lead to increasing levels of pollution of the air, water-bodies and soil. Do you think that isolating these activities to specific and limited areas would help in reducing pollution?
What is weathering? Elucidate in the various types of weathering.
How do organisms contribute in the formation of soil?
Following are a few organisms
(a) lichen (b) mosses (c) mango tree (d) cactus Which among the above can grow on stones; and also help in the formation of soil? Write the mode of their action for making soil.
Lichens are called pioneer colonisers of bare rock. How can they help in the formation of soil?
“Soil is formed by water.” If you agree to this statement then give reasons
Fertile soil has lots of humus. Why?
Why step farming is common in hills?
