A) a common ancestor
Homologous structures are structures that are similar in related organisms. There is a basic pattern of bones which can be inherited from a common ancestor
The substrate is the part that sticks into the active site of an enzyme.
Answer:
Insulin causes the body's cells to take in and store glucose, lowering the blood glucose concentration. If blood glucose gets too low, the body releases glucagon, which causes the release of glucose from some of the body's cells.
Explanation:
<span>dentinoenamel junction</span>
Locations at latitude closer to the equator receive stronger and more direct sunlight than locations near the poles.
