The answer in the space provided is practical intelligence.
This is where specific learning is introduced with the use of having to use
operating styles where it led people know about information by having to exert
efforts such as by doing it and later be helpful in his or her life.
There are many, but the major ones are that
1) language is somehow saved in our genes, which means that people with better communication skills had a survival advantage over those that didn't and that language is innate. This usually means that the specific parts of language: syntax for example are innate too
2) language was "invented" like writing: and then it was transmitted and changed.
Answer:
decreased genetic diversity due to a lack of admixture.
Explanation:
There is a good explanation online!