Atoms combined to make molecules most likely through compound or ionic bonds
C. exocytosis (I have to use 20 characters to respond and "answer it well". Exo means out/outside and exocytosis is an active transport system where a cell uses energy to transport material, like protein or waste, from inside a cell to the outside.)
<span>Species is a group of reproducing populations that are isolated from other groups. </span>
