How have the historic levels of melanin in human populations changed due to migration? (1 point)
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• Humans that produced more melanin became more common as populations migrated away from the equator.
• Humans that produced less melanin became more common as populations migrated
away from the equator.
Humans that produced less melanin became more common as populations migrated toward the equator.
• Humans that produced more melanin became more common as populations migrated toward the equator.