I'm going to say since I cannot see the graph i'm guessing that it shows an enzyme at its peak and lowering so i'm going to say the first one 1) There is a specific pH range in which the enzyme effectively lowers the reaction's activation energy
Answer:
C.Because of hunting, species such as bears and wolves are in danger of extinction.
the internal structures provide shapes and support to a variety of living organisms both unicellular and multicellular
