Question

question
what is the water - resistant, fibrous protein that fills the cells of the outer layers of the epidermis and helps slow dehydration?
answer
melanin
keratin
phospholipids
vitamin d₃
i dont know yet

Explanation:

Keratin is a water - resistant, fibrous protein found in the outer layers of the epidermis that helps slow dehydration. Melanin is a pigment for skin color, phospholipids are part of cell membranes, and vitamin D₃ is related to calcium absorption and bone health.

Answer:

B. Keratin