19. A protein produced by the epidermis layer of your skin that gives color to hair and skin is called A. pigment
B. melanin.
OC. sebum.
D. keratin.

Please help thx

i don't think so because different teachers have different materials. tehy teach differently, unless you know for sure your teacher is the exact same as others. i would just contact ur teacher

answergenetic engineering;

clean the wound to make sure of no infections.

age might have something to do with behavior depending on the age because not everyone who is the same age acts the same like 2 year olds could have bad behavior but some won't.

i hope this : )