Question

8. Fill in the blanks.

1.Earth's surface is divided into
_ and _ zones
2. To maintain ecological balance,_ % of the land should be under forest.
3. Planting of trees is commonly known as _
4.The main source of fresh water is _
5.Earth is known as _
planet due to the presence of water on it.​

Answer 1

2)33

3)afforestation

4)ground water

5)blue

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Answer 2

Answer:

hey !!

Here is your answer..

1. Earth 's surface is divided into Tropical, Temperate and frigid zones.
2. To maintain ecological balance, 33 % of the land should be under forest.
3. Planting of trees is commonly known as afforestation or reforestation.
4. The main source of fresh water is surface water or ground water.
5. Earth is known as blue planet due to the presence of water on it.

Explanation:

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