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प्रश्न
What is soil erosion?
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उत्तर १
The blowing away or washing away of land surface by wind or water is known as soil erosion.
उत्तर २
The removal of topsoil which is rich in humus and nutrients by flowing water or wind is known as soil erosion. If this process continues further then all soil may get washed away and the rocks underneath may get exposed. It may lead to the loss of all valuable resources because nothing grows as such on the rocks.
संबंधित प्रश्न
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?
Write a note on how forests influence the quality of our air, soil and water resources.
What is soil erosion? Explain means of preventing it.
Top-soil contains the following
A major source of minerals in the soil is the
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?
Carbon dioxide is necessary for plants. Why do we consider it a pollutant?
