-Medulla in a human is smaller (medullary index of less than one-third); and medulla in animals is very thick (medullary index of one-half or greater).
- Cuticle in humans is imbricated; and the cuticle in animals is coronal or spinous.
- Pigmentation in animal hair is denser than human hair.
- Animal hair can change colors in banded patterns; human hair cannot.
It's the first one is the answer
A. Released from the body through menstruation
Answer:
The important point is that the surface area to the volume ratio gets smaller as the cell gets larger.
Explanation: