[Valpal1]

Plants respire in reverse, CO2 in, Oxygen out.

[TexasGator]

“Plants respire in reverse, CO2 in, Oxygen out.”

You should get your facts in order before inserting yourself into conservation.

respiration
[ˌrespəˈrāSH(ə)n]

NOUN
biology
a process in living organisms involving the production of energy, typically with the intake of oxygen and the release of carbon dioxide from the oxidation of complex organic substances.

[jimfr]

Actually, plants have a day cycle and a night cycle. Day cycle - CO2 in O2 out, night cycle - O2 in CO2 out. Typically, the day cycle out weighs the night cycle.