which gases cannot be used directly from the air
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Answered by
2
Answer:Nitrogen
Nitrogen
Explanation:
Nitrogen cannot be used directly as it is used to control fire.
Answered by
2
Answer:
Nitrogen - 78% - Dilutes oxygen and prevents rapid burning at the earth's surface. Living things need it to make proteins. Nitrogen cannot be used directly from the air. The Nitrogen Cycle is nature's way of supplying the needed nitrogen for living things.
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