The tooth surfaces that face the tongue are known as lingual surfaces.
Answer:
The answer is B, I believe, because it states here that, "Enzymes are highly selective catalysts, meaning that each enzyme only speeds up a specific reaction. ... The molecules that an enzyme works with are called substrates. The substrates bind to a region on the enzyme called the active site. There are two theories explaining the enzyme-substrate interaction."
This demonstrates a competitive relationship, as they are competing for food.
Well if i am reading the question right then particles of matter are either ions, protons, neutrons or electrons is this have to do with chem or physics bc the question is a little vague
What are the pairs i need them before i can try to answer
