The complexity and diversity of humans increased most drastically ...

[ETearle]

The complexity and diversity of humans increased most drastically as a result of
 
  a. a hunter-gatherer lifestyle. c. their interest in art.
  b. the development of stone technologies. d. a sedentary lifestyle

Question 2

One aspect of human culture that is not shared by animal cultures, such as those of dolphins and chimpanzees, is forms of
 
  a. grooming. c. values.
  b. foraging. d. greetings.

[Eunice618]

Answer to Question 1

D

Answer to Question 2

B

[ETearle]

Wow, this really help

[cassie_ragen]

Great answer, keep it coming