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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
How are living organisms dependent on the soil? Are organisms that live in water totally independent of soil as a resource?
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 soil erosion? Explain means of preventing it.
What is soil? How does it form?
Give various sources and harmful effects of soil pollution.
Mention briefly the role of decomposers of cycling of materials.
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
Carbon dioxide is necessary for plants. Why do we consider it a pollutant?
