yes, I do believe so.
Everyone is born with different color hair.
Yes. It'll take a lot of processing & lifting though; that can be really damaging to your hair.
Black people can be born with "ginger" hair.
no, not everyone has brown hair when they are born, some people have blonde hair, some people have black hair and some people have orange hair when they are born.
yes
His hair naturaly curly.
nick jonas's hair is naturaly curly.
yes
If your hair is naturally blonde, meaning the hair color you had before you ever dyed it, your roots will grow out that color.
yes i know of a few people who's hair is naturally black.
The same reason that white people are born with brown blond or red hair...genes...
depends on genetics
Not cut it for a while.