Answer:
Hair is made of a tough protein called keratin. A hair follicle anchors each hair into the skin. The hair bulb forms the base of the hair follicle. ... Blood vessels nourish the cells in the hair bulb, and deliver hormones that modify hair growth and structure at different times of life, if that answers your question.
Explanation:
ATP is a nucleotide that has a bunch of roles in cells its major one though is being the energy currency of the cell.
So your answer is A
The answer would be.... A because when an object is change by force being applied is changing the object completely and to use force you need to be able to have energy