What are the three primary problems with the biological concept ...

[Yolanda]

What are the three primary problems with the biological concept of race as a category of human classification?
 
  What will be an ideal response?

Question 2

How is cultural relativism different from ethnocentrism?
 
  What will be an ideal response?

[xMRAZ]

Answer to Question 1

There is an arbitrary selection of traits used to define races, an inability to describe intra-species variation through racial categories, and repeated independent evolution of so-called racial traits in a population with no genetic relationship.

Answer to Question 2

While ethnocentrism is the belief that our own way of life is superior, cultural relativism helps us to understand the logic other cultures; it increases our understanding of others and is a fundamental anthropological research tool.