Beacuase light didnt used in a reaction.it used to provide energy
Answer:
Some cells are different shapes as they have different ways of attempting to pass through the immune system they are different sizes as some of them want to make sure that the white blood cells cannot swallow them as easily at that point antitoxins are released to break them down
Explanation:
The answer is B) Releases energy
arteries, arterioles, capillary beds, venules, veins
