D. Write short answers.
1. What is meant by soil erosion?
2. What is soil conservation?
3. What is meant by afforestation?
4. When is 'Earth Day' celebrated every year?
5. What do the three Rs stand for?
Answers
Answer:
Soil erosion is the natural process in which the topsoil of a field is carried away by physical sources such as wind and water.”
Soil conservation is the protection of soil from erosion and other types of deterioration, so as to maintain soil fertility and productivity. It generally includes watershed management and water use.
Explanation:
Afforestation is the establishment of a forest or stand of trees (forestation) in an area where there was no previous tree cover. Many government and non-governmental organizations directly engage in programs of afforestation to create forests, increase carbon capture.
April 22
Earth Day 2020: Today (April 22) is Earth Day, an international event celebrated around the world to pledge support for environmental protection. The year 2020 marks the 50th anniversary of the annual celebrations.
Reduce, Reuse, Recycle
One of the ways to put that plan into action is through the 3 Rs of waste management — Reduce, Reuse, Recycle. Reduce means to cut back on the amount of trash we generate.
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Soil erosion is the displacement of the upper layer of soil; it is a form of soil degradation. This natural process is caused by the dynamic activity of erosive agents, that is, water, ice, snow, air, plants, animals, and humans.
Soil conservation:
Soil conservation is the protection of soil from erosion and other types of deterioration, so as to maintain soil fertility and productivity. It generally includes watershed management and water use.
Afforestation:
Afforestation is the establishment of a forest or stand of trees (forestation) in an area where there was no previous tree cover. ... Sometimes special tools, such as a tree planting bar, are used to make planting of trees easier and faster.
Earth day:
Thursday, 22 April
3 Rupees stand for:
The 3Rs stands for: Reduce: Reduction of waste generation 〈Don't be wasteful. Reduce garbage.〉 Reuse: Reuse of products and parts 〈Use things again and again.〉 Recycle: Use of recycled resources 〈Recycle resources for reuse.〉
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