Answer:
Most fish use gills for gas exchange instead of lungs.
Explanation:
<span>temperature and pH yup yup</span>
If the outer energy level of the atom is , it does not react readily with other atoms.
The atom has it's outer energy level FULL, it doesn't need anymore electrons; so it's not going to bond with any atoms. It needs no more valence electrons to fill its outermost shell.
