I have never taking any class that makes me afraid of the environment. After taken this class, I feel the need to wash my hands all the time. It is like I have a tiny voice in my head saying wash hands all the time and it makes me to increase hand washing. I agree with you. That lab cared me because I had never realized that even the chair that we sit on would have bacteria on it. People who live near dirty water or drinking dirty water because they do not have clean water are be exposed to all of these microorganisms everyday without their knowledge of
