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प्रश्न
How can we prevent the loss of topsoil?
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उत्तर
Loss of topsoil can be avoided by:
- increasing vegetation cover.
- reducing tree fall.
- preventing animal overgrazing.
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संबंधित प्रश्न
What is soil erosion?
How are living organisms dependent on the soil? Are organisms that live in water totally independent of soil as a resource?
Define soil erosion. Give its causes, effects and preventive measures.
Which of the following is not a greenhouse gas?
A major source of minerals in the soil is the
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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?
Fertile soil has lots of humus. Why?
Why step farming is common in hills?
