There is a common belief that the world is occupied by different races of people that collectively make up the human family. However, instead of thinking in terms of race, we should think of the differences that we see in others, skin tone, hair, nose shape, height, eye colour as merely variations on an original theme, because all life started on the African continent.
Race is an unscientific 18th century creation to justify the people treating other unfairly. It is important to understand that the differences we have is what make us unique.
Why do we have different skin colours?
There is only one human race, the human race. Within the human race, we are all different and have different skin colours. People have different colours of skin because of a chemical in the skin called melanin. People with a lot of melanin have darker skin. People with less melanin have lighter skin.