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The main nitrogen reservoir is

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Nitrogen is mainly soluble in melt

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Why Earth atmosphere is nitrogen-rich?

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Famous nitrate deposit is located in

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What are the main processes of nitrate ore formation?

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What are the main concentrators of iodine?

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What are the main concentration of bromine?

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Name the famous source of bromine

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Name the grope of F, Cl, I, Br chemical elements

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What type of melt concentrates boron?

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