Dr. Chen is an evolutionary psychologist. He has observed that many Africans are lactose-intolerant. He notes that this might be because of adaptation, a key concept in the evolutionary perspective.

Selective    

Explanation:

  The selective adaption is one of the key concept of the evolutionary perspective that helps in influencing the given perspectives for producing the sensory adaption.

The evolutionary perspective is one of the type of natural selection process in terms of personality and the individual differences.  

According to the given scenario, Dr. Chen is known as evolutionary psychologist and due to selective adaption the Africans are more lactose intolerant. Therefore, Selective adaptation is the correct answer.

50% because no one is smart enough to relize that money makes the world go round and 99% of the earth hates donald trump the other 1% is the republicans go figure right

in 342 bc j._c. egypt fell into the hands of the persians, under the reign of nectanebo ii

greek city-states unite in a revolt against the persian empire at the beginning of the fifth century bc. j.-c  

from the year 660 or 659 bc ad, cyrus preached the revolt against the medes to deliver the persians.