Question

Darker skinned populations are found in equatorial regions because

a) the people there undergo the tanning response on a year round basis

b) dark skin protects against excessive heat

c) these are the oldest and least evolved groups

d) such populations have genes for permanently darker skin

Answer 1

D. such populations have genes for permanently darker skin

Step-by-step explanation:

Because the equatorial country often experiences summer all year round, so the sun's rays make the people there have dark skin, so that the majority of the population there is dark skinned

#I hope this helps :)