U still have school its summer
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:
Explanation:
A hypothesis is defined as an educated guess , while a research question is simplify a research wondering about the world .
Units that determine traits ?