Exercise (As per CCE ) A. Answer the following questions: 1. What is soil 2. What do you mean by weathering? 3. What is humus? 4. How will you show that air contains moisture? 5. Which type of soil is most useful for the growth of plants 6. Which layer of the soil is hardest of all?
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Explanation:
1. Soil is the loose surface material that covers most land. It consists of inorganic particles and organic matter.
2. Weathering is the breaking down or dissolving of rocks and minerals on Earths surface. Once a rock has been broken down, a process called erosion transports the bits of rock and minerals away. ... Water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering.
3. the organic component of soil, formed by the decomposition of leaves and other plant material by soil microorganisms.
4. after sometime we are able to see the tiny droplets of water at the surface of container ,it is because air contains the moisture in the form of water vapour but after come in contact with cold surface of container water vapours releases its energy and changes into droplets of water , this shows that air contains
5. Loam soils
6. Bedrock is the hardest part of the soil. It is the deepest layer of the soil profile and it contains hard rocks. Humus is the dead and decaying matter and is the topmost part of the soil. Subsoil lies below the topsoil.
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