During the formation of new strands of DNA, this enzyme adds new nucleotides to the growing strands. DNA polymerase
RNA polymerase
Nuclease

the answer is c.

by: nicholas dooley

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 . : ) : ) : )