Enzymes acts as a catalyst in chemical reactions to speed up the rate of reaction.
Enzymes are not necessarily needed because substrates can disintegrate on their own, but enzymes are helpful to aid this process.
"Pathogens would invade the body and cause disease, such as giardia" is the one among the following choices given in the question that <span>describes how polluted water sources would most likely affect one’s personal health. The correct option among all the options that are given in the question is the last option or the fourth option.</span>
I think one is carbon dioxide not sure what the other is
The pyloric valve control food movement from the stomach into the small intestine.
