Explanation:
in dim light the iris contract ,the the pupils widens to allow more light to enter the eye,in bright light the iris relaxes and size of pupil becomes smaller to reduce amount of light entering the eye. NOTE: the muscle do not expand they either contract and relaxes
the answer is gene- the combined DNA from your mom and dad which makes up your full set of DNA.
I believe the answer to this is B.
This is because the child is growing so more cells are being produced and it is dividing.
hope this helped :) have a great day
Answer: uhm what about it?
Explanation: