Once proposed, a hypothesis may be tested by:
A. comparing it to known data gathered from nature
B. conducting an experiment
C. comparing one phenomenon with another to determine the relationships between them
D. all of these
D. all of these
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The Dordogne Region of France 30,000 to 20,000 provided
A) a rich environment so that a more settled lifestyle was possible B) plenty of animals for hunting and fishing C) caves for shelter from the cold D) all of the above E) none of the above
Evidence from Zhoukoudian suggests that Homo erectus
a. lived there continuously for over 250,000 years. b. were settled agriculturalists. c. intermittently occupied the area. d. built wooden structures. e. kept domesticated animals.
What has been the consequence of growing corn for use in the production of ethanol to alleviate dependence on oil?
a. The price of corn nearly tripled. b. Americans have saved a significant amount of money due to cheaper gas. c. The production of fuel for automobiles has become more energy efficient. d. The price of corn tortillas in Mexico fell.
In Hidatsa society, male age grades mostly related to __________
a. buffalo hunting b. military service c. religious activities d. agricultural activities