7 Answers

You have it backwards! Plants and trees take carbon dioxide and convert it into oxygen.

My botany is a bit rusty but as I recall, during the day while photosynthesis is the dominant process in leaves, carbon dioxide is taken up from the air and used in the process of making sugars. At night, when photosynthesis does not occur - no sunlight for energy - respiration does occur, which gives off carbon dioxide just as it does in animals. On balance, though, plants take up much more carbon dioxide in photosynthesis than they give off in respiration.

Glory be the day when they make a car that  runs on salt water and gives off carbon dioxide until then lets enjoy nature.

I remember when Carbon Dioxide was a fertlizer, and that plants love it and turn it into oxygen, now today, they are trying to tell us that its a toxin and according to alGore, you need to 'buy' Carbon credits for breathing.. it's against the law to breathe.. We humans are a bad species and must be exterminated, unless of course you're rich and can afford to breath..  LOL

A measure of water chemistry, pH does not exist in a vacuum; carbon dioxide levels, ... Photosynthesis can build O2 levels faster than the O2 is consumed, and greatly ... animals are still producing CO2 and both plants and animals use O2 at night. ... in pH from under 6 in the early morning to as high as 11 by mid- afternoon, ...

I didn't know the answer to the question, but I've just learnt alot from these answers.

I had a 4th grade teacher who kept a lot of plants in the classroom to increase the oxygen levels, that's how I remember what plants release............