So you dont get lung cancer<span />
The four<span> major </span>types of germs<span> are: </span>bacteria<span>, viruses, fungi, and protozoa. They can invade plants, animals, and people, and sometimes they make us sick. </span>Bacteria<span>(say: BAK-teer-ee-uh) are tiny, one-celled creatures that get nutrients from their environments in order to live.</span>
D. Epinephrine (adrenaline) is a monoamine produced in the adrenal medulla.
