Answer: a tiny muscle connected to each hair follicle and the skin. When it contracts it causes the hair to stand erect, and a "goosebump" forms on the skin.
Answer:
temperatures in the atmosphere change with altitude
Answer:
Explanation:
If im correct, the pea plant study was a way to use plants with their different traits to study Dominant and Recessive traits in plants.
He crossed a smoother pea with a more wrinky one and used the offspring as a way to determine dominant and recessive phenotypes.
I may be incorrect but I hope this helps!