Name the main features of the three main races and explain the biological meaning of their origin.

Equatorial race: dark skin, curly hair, wide flat nose, thick lips. Eurasian race: fair skin, straight soft hair, long straight nose, thin lips. Asian-American race: straight black coarse hair, dark skin, broad flat face, narrow eye slit with leathery fold, medium-thick lips. The meaning of these differences lies in the adaptation to the living conditions.

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.