Question

F. Answer the following questions in short.
1.
Name the three most important natural resources.
2.
Mention any four uses of land.
3. What is humus and how is it useful for soil?
4. Name the soil forming factors.
5. What are shelter belts?
6.
Name four regions that face water scarcity.
7. What is rainwater harvesting?
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Answer 1

Answer:

Rainwater harvesting system, also called rainwater collection system or rainwater catchment system, technology that collects and stores rainwater for human use. Rainwater harvesting systems range from simple rain barrels to more elaborate structures with pumps, tanks, and purification systems.

Answer 2

Answer:

1

2

3

4

5

6

7

Explanation:

1. Water, soil, coal.

2.Recreational - fun, non-essentials like parks.

Transport - roads, railways, and airports.

Agricultural - farmland.

Residential - housing.

Commercial - businesses and factories.

3.More precisely, humus is the dark organic matter that forms in soil when dead plant and animal matter (including aerobic compost) breaks down further, specifically through the action of anaerobic organisms. Humus has many nutrients that improve the health of soil, nitrogen being the most important.

4.Scientists attribute soil formation to the following factors: Parent material, climate, biota (organisms), topography and time.

5.Shelter belts are rows of trees, usually along fence lines. They are planted mainly to protect animals or crops from cold winds, but also to give shade in hot weather. In regions such as Canterbury where there is a lot of cultivated land, shelter belts also reduce wind erosion.

6.Sudan (12.3 million)

Venezuela (5.0 million)

Ethiopia (2.7 million)

Tunisia (2.1 million)

Cuba (1.3 million)

7. Rainwater harvesting system, also called rainwater collection system or rainwater catchment system, technology that collects and stores rainwater for human use. Rainwater harvesting systems range from simple rain barrels to more elaborate structures with pumps, tanks, and purification systems.

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