"Cereus-validus......." wrote in message
...
What does your science teacher say?

I've left school.


Couldn't you find any websites on photosynthesis when you did your Google
search?

Yes, but none mentioned the levels of each that they release during day and
night.


I was looking for a percentage - e.g. at night plants release on average 20%
(carbon dioxide) of the amount of oxygen that they released during the day.





"Matalog" wrote in message
...
I understand that when sunlight is around trees and plants will give off
oxygen and soak up carbon dioxide (photosynthesis) - but at night is it
true
that they will give off carbon dioxide? If so, how much of each will be
released during the night and day.

Thanks for any answers.

P.S. At night do they take in oxygen?