Almost all cells in our body have a similar genome, but why they are so different in morphology and function? e. g. nerve cell vs muscle cell.

on island x the species needed to adapt because they were being subject to predators which didn't inhabit island y.  

bacteria could be both, harmful and to us. harmful bacteria could make us sick and probably even by getting the chances of getting a disease, but good bacteria fight it off with your immune system. there is always bacteria everywhere we go. we need to make sure to wash our hands after using the restroom, before eating, after eating, after petting an animal too. so you see, bacteria is everywhere and is harmful or . i hope this . : ) : ) : )