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What do humans exhale?
They breath out air with a higher percentage of CO2, a lower percentage of oxygen and (depending on the humidity) a higher percentage of water vapour.

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First answer by ID1165374804. Last edit by PsychoMan. Contributor trust: 13 [recommend contributor]. Question popularity: 13 [recommend question].

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What do people exhale?  Which gas do humans exhale?  Is oxygen exhaled by humans?  When you exhale you eliminate?  What elements do humans exhale?  What 2 gasses do humans exhale?  What other gases do you exhale?  How much water do humans exhale?  When you exhale what is produced?  What are the gases humans exhale?  What type of air do humans exhale?  Humans exhale what gas from plants?  What do you remove when you exhale?  The carbain molecule humans exhale?  What else comes out when you exhale?  What do humans exhale when breathing?  What gas do you expel when you exhale?  What do you call the gas humans exhale?  What do humans release when they exhale?  What gas do humans exhale to get rid of?