So… Trees sucks in co2 and release o2 during day…. and doing the other way around at night… how would that help cleaning up air pollution then?

Question

Call me stupid but I was told that while yes, Trees does absorb CO2 form the air and give Oxygen back during daytime. There’s also a reason to not have tree in your enclosed bedroom during night as it release all the CO2 absorbed.

So my question was that people are saying to plant tree to help purify the air in streets, city, or any dense population location. If the statement in first paragraph’s correct. wouldn’t that just result in that the trees would give the o2 and purify the air during day time and just flood the street with co2 during night? I’m confused…

In: 286

Answer 1

Trees are primarily made out of carbohydrates. The carbon comes solely from the air (CO2).
The fact that trees grow means that they absorb net positive CO2 from the air.