We only take oxygen from our sround so where are other gases goes from srounding in atmaosphere ?

We only take oxygen from our sround so where are other gases goes from

1.	We only take oxygen from our sround so where are other gases goes from srounding in atmaosphere ?
Answer» We inhale oxygen as well as othet gases present in our atmosphere....It is not possible for us to inhale only oxygen...During exhailation other non-useful gases are sent back to atmosphere like CO2 Cause we need o2 so we take.... And let the other gases as it is in the atmosphere Different gases have different importance in the atmosphere