Atmospheric air contains _____________ percent of Nitrogen?
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Answer: C. 78%
Explanation
Earth atmosphere is composed of approximately seventy eight percent nitrogen gas by total volume. Nitrogen represents the most abundant single chemical element found in the air we breathe daily. This high percentage makes nitrogen the primary background gas in our planet lower atmospheric layers. Dry air near Earth surface also contains about twenty one percent oxygen and one percent argon. Atmospheric nitrogen is relatively inert, meaning it does not easily react chemically with other elements. Plants rely on soil bacteria to fix atmospheric nitrogen into usable chemical compounds for growth.
Meteorologists and environmental scientists monitor atmospheric gas compositions to study global climate patterns. Scuba divers must understand atmospheric gas percentages to prevent nitrogen narcosis during deep underwater dives. Industrial manufacturing processes frequently utilize purified atmospheric nitrogen to create inert working environments. Thirty percent is much higher than the actual proportion of nitrogen present in Earth atmosphere. Eighty seven percent overestimates the natural nitrogen concentration found in our planet air mix. Eighty percent is close but seventy eight percent is the precise scientific value for atmospheric nitrogen.
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- Physical Education
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- Physical Education
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- medium
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