Question # 1

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

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Mercury

Venus

Earth

Mars

What are the main types of the soil?

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Silt, Sand and rock

Clay, humus and sand

Sand, silt and clay

silt, humus andclay

What is important in the neaural measure.

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Minerals

The decayed matter

sand

Salts

What % percentage of the earh is water

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70%

75%

72%

80%

Wet clay can be moded into any shape

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Clay

Sand

Slit

Fertile soil

The particles of sandy soil are of medium size.

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Slit

Humus

Clay

Sand

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

Sand soil is used for making.

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Pottery

Glass

Farming

Cultivation

Which type of soil is good for growth of plants.

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Sand

Silt

Clay

Rock

the diameter of the earth is approx

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12800 km

12900 km

12700 km

12600 km

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