Over the last 100,000 years, Homo sapiens have ___ biologically and have ____ socially
a. changed very little; changed very dramatically
b. changed very dramatically; changed very little
c. not changed at all; remained constant
d. evolved to become shorter; regressed to an earlier time period
A
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Over the summer break, Jed earns extra cash working as a salesman at Sensational Sound Systems. As one of the most knowledgeable salesmen on staff, Jed tells a young couple shopping for a sound system that the more expensive models are worth the money because they ____
a. ?amplify sound up to 160 dB b. ?boost frequencies below 80 Hz c. ?buffer sounds that reach 60 dB d. ?filter out frequencies below 10000 Hz
Water, oxygen, and ____ freely flow across a cell membrane.
A. calcium B. positively charged ions C. magnesium D. carbon dioxide
All but which of the following are examples of violent behaviors in schools?
a. Attacks on children and teachers b. Physical and psychological damage c. Death d. All of these are violent behaviors that occur in schools.
The fact that one's memory can be influenced by the mood or bodily condition that exists at the time of learning and at the time of retrieval is known as
a. eidetic imagery.
b. the serial position effect.
c. state-dependent learning.
d. the tip-of-the-tongue state.