Gas has chemicals in it so it well affect you're lungs
Ozone
Radon gas.
The effects of the Columbian Exchange were both harmful and beneficial. This is because the diseases caused native Americans to die but new goods were spread to different areas.
Helpful is a word that describes something that is useful and gives aid. The opposite of helpful would be unhelpful, useless, destructive, damaging, worthless, or hindrance
12 for gas intake and air both
lion are useful and harmful
i think its both harmful and useful
changes both harmful and useful
both
Yes.
both, depending on circumstances
In what ways is antarctica be useful for humans
It is both, and both to a very great degree.
Animals that produce poison.
Ozone at the atmospheric level is useful as it absorbs the harmful UV rays. It is bad at ground level as it acts like a greenhouse gas.
Gasoline
Chlorine gas,mustard gas,and tear gas!in soviet russia,car steals you!