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Answer the following in one word each:
(a) A dark brown or black mass of partially decomposed organic matter of dead plants and animals-
(b) The horizontal layers of soil one below the other in a vertical cross-section-
(c) Name the soil with the highest percolation rate-
(d) A type of soil formed due to deposition in riverbeds-
Name the horizon of soil each of these features refers to:
(a) It has mostly large rocks.
(b) It is made up of sand, clay and pebbles.
(c) It is the topmost layer of soil.
(d) Hardly any roots reach this horizon of soil.
(e) It is rich in minerals.
(f) It is a home to soil organisms.
(g) Below it, is the hard rocky surface of the earth.
(h) It has a good amount of humus.
Why is the seashore sandy?
Why are tar roads sloped on either side?
What qualities must a soil have for a plant to grow well?
How do soil organisms obtain air?
What do you understand by percolation rate of soil?
Give two differences between sandy soil and loamy soil?
Mention two ways by which a farmer's field could get eroded?
Clayey soil gets waterlogged even when the rain does not have. Why?
Excessive use of fertilizers is not beneficial for soil. Why?
Why do farmers grow cover crops?
What are shelterbelts?
Why does water drain quickly from sandy soil?
What is compost? Why is it beneficial to soil?
How is sandy soil different from clayey soil?
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