which is healthier, a dog or a plant?


I wonder what quantities of CO2 gas are released by houseplants at
night.

I have a friend who won't let his wife have house plants because he
doesn't want to compete for oxygen.  This is a stupid bully tactic on
his part, I think, since he allows the dog to sleep in the bedroom.

The ammount of CO2 given off by plants has to be very miniscule, in my
mind, which is why I would like some hard core facts to show him
regarding respiration amounts. In particular, compared with the CO2
released by the dog, per hour, at say 72 degrees F and 50% humidity (for
control purposes).

Thanks for all your comments! Anyone have some numerical data on this?



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