Question # 1

What is therole of living organisms in the soil.

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Making soild soft and airy

Making soil hard

Make soil unfit for cultivations

Making the air dry

In terms of structure what is the inner most art of the earth are called.

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External core

internal core

Mantle

Crust

The amount of fresh water on the Earth is

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about 1 %

about 30%

about 70%

about 90%

The amount of fresh water that available to mankind is approximately to the total amount of water.

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01%

2%

3%

4%

Weight of the internal core of the earth is............ of the total weight of the earth.

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30%

16%

33%

34%

the diameter of the earth is approx

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12800 km

12900 km

12700 km

12600 km

Only plant of solar system whreconditions are conductive for the eistence of life that is.

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Mercury

Venus

Earth

Mars

Sand soil is used for making.

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Pottery

Glass

Farming

Cultivation

What % percentage of the earh is water

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70%

75%

72%

80%

What is important in the neaural measure.

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Minerals

The decayed matter

sand

Salts

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