# Would the sudden disappearance of humans mean less air/oxygen?

**URL:** <https://boards.straightdope.com/t/would-the-sudden-disappearance-of-humans-mean-less-air-oxygen/601787>\
**Category:** Factual Questions\
**Created:** [November 3, 2011, 10:34pm UTC](https://boards.straightdope.com/t/would-the-sudden-disappearance-of-humans-mean-less-air-oxygen/601787 "2011-11-03T22:34:01Z")\
**Posts on this page:** 1\
**Page:** 2

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**Author:** ![Lemur866](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/lemur866/32/434_2.png) [@Lemur866](https://boards.straightdope.com/u/Lemur866)\
**Post date:** [November 4, 2011, 11:22pm UTC](https://boards.straightdope.com/t/would-the-sudden-disappearance-of-humans-mean-less-air-oxygen/601787/21 "2011-11-04T23:22:08Z")

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Rule of thumb is that humans are 70% water. Now, dehydrated powdered protein, bone, and fat isn’t going to have the same density as fresh puree, but it should be in the ballpark of 30% of the volume when fresh.

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