On the basis of what assumptions and conclusions can we judge that all races belong to the same species Homo sapiens?

They have the same mental capacity; the same internal structure of the body, organs – their transplantation is possible; similar genetic material that carries information about traits; marriages occur between people of different races and children are born.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.