Understanding density helps you predict whether an object will sink or float.
C
Bile helps with digestion
Answer:
a spider has 4 pairs of legs, since they have 8 legs
The activity of some enzymes requires vitamins. This is because vitamin derivatives contribute to the biochemical mechanisms of these enzymes. These vitamin derivatives belong to a class of molecules known as cofactors, which are organic molecules (called coenzymes) or metallic ions, that assist in the catalytic activity of an enzyme.
