my 5 year boy curious about girls. is this normal or not? what is reason for that. if he need any sex education?

A. So what is your child curious about girls can you please little bit explanation can you please provide what kind of questions your child has an all because when they see the things are very different the clothes are different their hair are long and their voice is different it is very normal for them to ask questions why do they look different or any of these things it has got nothing to do with sex and also sex education at the age of five years is actually not right