Match each set of energy sublevels to the principal energy level that contains them

fe 55.85 g/mol and h2o 18.02 g/mol.

it is stable as it is in group 0 which have full outer shells of electrons

they all get energy from eating other animals, dead animals to be more precise.

hienas tends to steal pray from other animals. crows and vultures tend to eat dead animals and leftovers.

hope it ,

bioteacher101