Explanation:
Melanin is the pigment which absorbs UV light and it is present in skin and gives black colour to it.As we can see africans usually have black skin as they have to face direct uv light.
Answer:
Cornell University
I did not know what article you refer to but I know that there is an article with this question.
option B
there are 22 pair of autosome and 2 pair of sex chromosome
B. Because weather is a complex interaction among many different variables that are constantly changing
Genetic traits that survive through selection increase throughout a population.
