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At the latest, early humans began to speak by a. 200,000 B.C.E. b. 150,000 B.C.E. c. 100,000 ...

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eruditmonkey@yahoo.com:
At the latest, early humans began to speak by
 
  a. 200,000 B.C.E.
  b. 150,000 B.C.E.
  c. 100,000 B.C.E.
  d. 50,000 B.C.E.
  e. 10,000 B.C.E.

Question 2

What is the most important indicator of human behavior, according to scientists?
 
  a. The ability to modify tools to improve them
  b. The existence of trade networks
  c. The burial of the dead
  d. The ability to plan ahead
  e. The ability to speak

jgranad15:
Answer to Question 1

d

Answer to Question 2

d

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