The spread of H. erectus from tropical and subtropical climates into temperate zones was facilitated by all of the following EXCEPT
A. the use of fire for defense.
B. living in rock shelters and caves.
C. blade-toolmaking traditions.
D. increasingly efficient hunting methods.
E. the use of fire for cooking.
Answer: C
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Which of the following would not customarily be considered part of the formal economy?
a. Babysitting for neighbors b. ?Managing a fast-food restaurant c. Waiting tables for a chain restaurant d. Teaching kindergarten
European economic expansion was closely connected with __________
a. voluntary labor b. nation building c. technological advancement d. warfare
In the presence of anti-A, type A red blood cells will undergo:
A. agglutination B. hydrolysis C. lysis D. fusion
There are no well-documented examples of natural selection operating in natural populations
Indicate whether the statement is true or false