Variations in hair, eyes, and skin color bring beautiful uniqueness to the human race. What substance do we have to thank for our differing pigments?

Melanin is the pigment which gives human skin, hair, and eyes their different colors. Depending on how much a population has been exposed to the sun historically, the levels of melanin will be higher or lower.

Asked by Rachel Bortles · Last updated 5 years ago · 95.3K views · SOURCE