1.

The reason for the variation in skin color in human species is- 1.Melania 2.Hemoglobin 3.Carotene

A. 1 and 2 is correct
B. only 2 is correct
C. 1, 2 and 3 is correct
D. 2 and 3 is correct
Answer» D. 2 and 3 is correct


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