Biology
Harish went to the beach for vacation of 2-3 days. After coming home he noticed his skin tone has darkened. This was due to
- melanin
- rhodopsin
- thyroxine
- serotonin
Skin
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Answer
melanin
Reason — The darkening of Harish's skin tone after a beach vacation is primarily due to the increased production of melanin, a pigment responsible for skin color.
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