We all have a special chemical in our skin called melanin. If you have a lot of melanin, your skin is dark. If you have only a little, your skin is light. How much melanin you have in your skin depends on how much your parents have in theirs. We use the name Black to mean the group of people of whom our family is a part.
Black people can have different skin colors.
When he takes a bath the dirt on his skin washes off, just like when you take a bath. Whether we have light or dark skin, we all get dirty but our skin satys the same color after we wash it. Our skin is clean after we wash, no matter what color it is. Let's not say anything about it. She speaks Japanese because that's what her mom and dad speak.