Question

question①
differences in skin color among individuals are the result of ____________.
answer
differences in the number of melanocytes
differences in the thickness of skin
differences in the number of sebaceous glands
the different levels of melanin synthesis
i dont know yet

Explanation:

Skin color is mainly determined by melanin. Different levels of melanin synthesis in melanocytes lead to differences in skin color among individuals. The number of melanocytes is relatively similar among people. Skin thickness and the number of sebaceous glands do not directly determine skin - color differences.

Answer:

the different levels of melanin synthesis