Idk the options but it could be genetic variation
Answer:
geologists use rock samples and direct evidence to prove what earth's structure is like.
Explanation:
This would directly affect the epidermis because blisters will develop within the surface of the skin. Having blisters on the epidermis will decrease the function of the skin to be an effective barrier to disease. This is because blisters are open wounds that are prone to infection. As infection passes through these openings, it will affect the dermis and the other layers of the skin. Bullae is actually an auto-immune skin disease.
This relates to Evolution
They originate near the Equator!