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  3. 1. in humans, darker skin color is adaptive at lat

1. In humans, darker skin color is adaptive at latitudes near the equator (where ultraviolet light...

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Medical Sciences

1. In humans, darker skin color is adaptive at latitudesnear the equator (where ultraviolet light is most intense) becauseUV light

stimulates synthesis of folic acid 

causes breakdown of folic acid 

stimulates synthesis of vitamin D 

causes breakdown of vitamin D

2. In humans, lighter skin color is adaptive atlatitudes far from the equator because UV light

stimulates synthesis of folic acid 

causes breakdown of folic acid 

stimulates synthesis of vitamin D 

causes breakdown of vitamin D

Answer & Explanation Solved by verified expert
3.7 Ratings (654 Votes)
A common explanation to both the answers The difference in skin color within poles and equator is due to the changes in the intensity of the sunshine in both regions melanin is a pigment that protects the skin against the    See Answer
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