If a human were to be placed in an enclosed room with an atmosphere of oxygen a

If a human were to be placed in an enclosed room with an
atmosphere of oxygen and nothing else, what would he or she
exhale

(1) They exhale only carbon dioxide

(2) They exhale only oxygen

(3) They exhale only nitrogen

(4) No air at all

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If a human were to be placed in an enclosed room with an atmosphere of oxygen and nothing else, wha..

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( 1 ) They exhale only carbon dioxide

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