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Answer 1

8)

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Answer:

1)Weathering is the breaking down or dissolving of rocks and minerals on Earths surface. ... Water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering. Once a rock has been broken down, a process called erosion transports the bits of rock and mineral away

2)Soil is a material composed of five ingredients — minerals, soil organic matter, living organisms, gas, and water. Soil minerals are divided into three size classes — clay, silt, and sand (Figure 1); the percentages of particles in these size classes is called soil texture. The mineralogy of soils is diverse

• 3) Weathering leads to soil formation which is required for agriculture.
• Weathering may provide new landscape, e.g. Karst topography.
• Weathering may provide building materials like cement and limestones.
• The weathering process leads to exposure of new minerals which become easy to be exploited.

4)The Earth's surface changes continuously through weathering and erosion. ... Erosion by wind, water or ice transports the weathering products to other locations where they eventually deposit. These are natural processes that are only harmful when they involve human activity.

5)Two main factors that play an important role in weathering are Temperature and Precipitation. Some other factors are composiiton of rocks and time.

6) A rock is any naturally occurring solid mass or aggregate of minerals or mineraloid matter. It is categorized by the minerals included, its chemical composition and the way in which it is formed. Rocks are usually grouped into three main groups: igneous rocks, metamorphic rocks and sedimentary rocks

7) Following methods are normally adopted for conserving soil:

• Afforestation: One of the best ways to conserve soil is to increase the area under forests. ...
• Checking Overgrazing: ...
• Constructing Dams: ...
• Changing Agricultural Practices: ...

(i) Crop Rotation: ...

(ii) Strip Cropping: ...

(iii) Use of Early Maturing Varieties

8) above(see the image)

Explanation:

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