Q. How much water is contained by hydrosphere?

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Q. What is melting point of water?

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Q. Which cation is dominating in seawater?

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Q. Organic waste is decomposed by

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Q. How much percent earth's volume lithosphere have ?

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Q. What is average thickness of lithosphere at continental region?

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Q. Top crust of earth, in which continent and ocean basin rests, known as

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Q. Breakdown of organic matter is known as:

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Q. Which is most rigid part of earth layer ?

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Q. What is thickness of 'lithosphere' at ocean region?

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Q. What is annual precipitation in temperate forest?

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Q. What are dominant vegetation in temperate forest?

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Q. Which trees are involved in making buildings and furnitures?

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Q. What percent of land area is covered by desert?

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Q. Highest abundance and greatest diversity of large animals are found in

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Q. In which biome species diversity is high?

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Q. Which ecosystem is economically important in world?

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Q. Which is known as boreal forest ?

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Q. What is annual rainfall in tropical savannah?

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Q. What is average temperature of taiga in winter ?

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