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प्रश्न
What is soil erosion?
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
How is soil formed?
What are the methods of preventing or reducing soil erosion?
Define soil erosion. Give its causes, effects and preventive measures.
Top-soil contains the following
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.
Soil formation is done by both abiotic and biotic factors. List the names of these factors by classifying them as abiotic and biotic?
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?
Carbon dioxide is necessary for plants. Why do we consider it a pollutant?
