Question

describe the relationships between skin color and ultraviolet (uv) radiation. identify one hypothesis as to why light skin should be found in northern latitudes, and one hypothesis as to why dark skin should be found closer to the equator.

Explanation:

Skin color is related to UV radiation as melanin in skin protects against UV. Darker skin (more melanin) is near equator (high UV) to prevent DNA damage. Lighter skin (less melanin) in northern latitudes (lower UV) allows enough UV for vitamin D synthesis.

Answer:

Relationship: Melanin in skin protects from UV. Hypothesis for light skin in northern latitudes: Lower UV in north, less melanin allows sufficient UV for vitamin D production. Hypothesis for dark skin near equator: Higher UV near equator, more melanin protects against DNA damage from intense UV.