So you could say "This person is clearly of an African race, this person clearly of a European race", but what about the in-betweens? "Well", you might say, "the transition is the Arabs". 'But the Turks don't look very different from Eastern Europeans' I say, "So there's also a Balkanise race". And so on, and so on. But it's an infinitely smooth transition, and our DIVISION of races is arbitrary.
Nice comment @yogiraj.gurunath I think you did great with this one ππ