Is there more more oxygen at night or during the day?

Question

-plants do not produce oxygen at night

-people take in more oxygen during the day than at night

~we are more active during the day, and thus take in more oxygen

~we sleep at night, and when we sleep, we need less oxygen,

and thus take in less of it

Answer 1

Wow I agree with your answer I have nothing to add up.......LOL

Answer 2

For Me It Will Be The Same

Answer 3

I think the total effect on the global atmospheric oxygen concentration would be negligible unless you were monitoring a closed ecosystem.  You would need a known volume of air and plants and people whose respiration could be monitored.  Then you could get an accurate measure of how oxygen levels varied day and night.

Answer 4

Well u just answered ure own question then

Answer 5

You can argue for any conclusion you like.  Only measurements would give you a definitive answer.  But at night, even plants respire, consuming oxygen.