Question

why O2 is essential for human Why not Co2

Answer 1

O2 is more important because it help us in many ways:
1) it's most important use is that it help us in breathing.
2)moreover it helps in existence of organisms
3)it kills unbenificial bacteria in our body which help in maintenance of our body

Answer 2

Answer:

Here is your answer

Yaa it is very essential for human beings.. as well as animals and also for some plants.

As it's help in breathing.

It's alive all of us .

Here is your answer

Please mark me as Brainliest buddie