Which is an example of a polyatomic ion? H2 CO3- Mg Ne -

Iknow this isn't a question, but is there someway to ask a question under public safety or is there no category for it? i don't know if i'm overlooking it or not.

The different layers of gases that extend form the surface of the earth into space

What does it mean when the bisecyer of the photosynthesis of the root of 27 equals 3