Why are surtene parts of black women body darker then other!?

I stingy resembling our butts and stuff thats for a time strange and other women bodies are adjectives like peas in a pod color i surmise!
Answers:

I perceive so miserable adjectives the time because i am twelve and i am approaching really really soaring for my age?

There is a substance call melanin in the skin that change the colour of your skin when exposed to sunlight. Like when we suntan.

Darker woman are smoothly brown to start next to. Being in the sun darken them more.

'Those places' that do not see the sun such as the vaginal nouns and crease of the bottom stay the lighter clour of brown.

Us white woman will sunburn but we stay alike colour. But we do own pink places too.

Please help out?

i really dont any but thanx 4 askin the sound out