Hydrogen gas makes up about 21% of the air. true or false
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False....
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The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen. Air also has small amounts of lots of other gases, too, such as carbon dioxide, neon, and hydrogen.
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ਬੰਦੇ ਫੱਕਰ ਕਦੇ ਫਿਕਰ ਨਹੀਂ ਕਰਦੇ ਕਿੰਨੇ ਹੀ ਹੋਣ ਦੁਖੀ ਕਦੇ ਜਿਕਰ ਨਹੀਂ ਕਰਦੇ
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