Describe the structure of typical atom identify where each subatomic particles is located

The structure of atoms is a small electron(-) orbiting the atom's nucleus which contains the much bigger proton (+) and neutron. (A atom is not circular. And the reason you see them drawn with a circle around the nucleus is because they're showing you the probable path the electrons are taking around the nucleus 

Body system that helps to breathe

Explanation:

Hope this helps! follow and message me in the comments if u need more explanation!