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seen Jul 14 at 16:57

web designer and developer.


Jan
12
comment Does difference in expected life duration between men and women have biological nature?
Accept some answers please.
Jan
12
comment Photosynthesis - Light Intensity
Could you list a few ways that you've tried to research this question before asking here so we know that you've put effort into the question?
Jan
4
awarded  Supporter
Jan
2
comment How much gas is exchanged in one human breath?
Just as a side note, it's a common error to believe that you're just breathing out CO2 and H2O. You're also breathing out a fair amount of oxygen as well.