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प्रश्न
How is humus formed?
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उत्तर
Humus is formed when plant residues decay into humic substances, or organic matter that has reached maturity. This process is known as humification.
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संबंधित प्रश्न
Soil formation is an important benefit of weathering. How is it important for mankind?
People have used various farming methods to increase food production. However, in the process, they have stripped the soil of nutrients, leading to its degradation.
Can you suggest some ways by which we can reduce soil degradation?
Match the column
| Column A | Column B |
| 1. Granular disintegration | (i) causes feldspar to become a powdery mass |
| 2. Oxidation | (ii) is common in deserts |
| 3. Carbonation | (iii) is the simplest form of chemical weathering |
| 4. Hydration | (iv) mainly affects limestone regions |
| 5. Solution | (v) results in the rusting of iron |
Which is the most important effect of weathering?
Distinguish between the following:
Sheet erosion and gully erosion.
Describe how changes of temperature lead to weathering.
OR
How do changing temperature lead to weathering?
Give a geographical reason:
Human is an agent of weathering.
Give a geographical reason:
Effect of mass movement will be greater along the western slope of the Sahyadri's than the eastern slope.
It is weathering that is responsible for bio-diversity on the earth. How?
Are physical and chemical weathering processes independent of each other? If not, why? Explain with examples.
