politics tbfh but this answer has to be 20 characters sooooooooooooo
The answer is supposed to be B
The rate of a enzyme activity is greatly influenced by the structure of the enzyme or In other words a change in the structure of an enzyme affects its rate of activity. When ph of a particular medium changes it leads to an alteration in the shape of the enzyme.
It is because liquids can move through it.
Yes, Penguins cannot fly.
