How does the function of melanin explain not only the variety of skin colors but susceptibility to skin cancer?

Which chemical equation is unbalanced? which chemical equation is unbalanced

What are the two causes of density in deep current waters? a. salinity (how much salt) of the water and high temperaturesb. salinity (how much salt) of the water and low temperatures c. oxygen content of the water and high temperatures. d. oxygen content of the water and low temperatures

Are the layers of rock above and below the coal older or younger?