Q. What is percentage of S, Ca and K ?

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Q. What makes sea water not to be safe for drinking ?

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Q. What is an approximate percentage of dissolved solid in seawater?

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Q. Which three elements constitute 90% of sea water?

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Q. 'Water' has a high

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Q. Which water can be consumed by humans?

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Q. What is chemical formula of water?

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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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