Since natural selection can only act on characteristics that already exist,
__________ provides the raw material on which natural selection can act.
a. retention
b. extension
c. fixation
d. generation
e. variation
e. variation
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Last year, Fiona had a yard sale. She marked the prices of items very reasonably, and she refused to reduce them when people tried to "deal.". This year, she had another yard sale, but this time, she marked the prices of items quite high, and then reduced them by 50% or more when people asked to "deal.". Fiona was surprised to find that she made much more money this year. When she asks you why
this might have happened, you explain how judgments can be affected by a. absolute thresholds. b. sensory adaptation. c. contrast effects. d. subliminal comparitors.
Evolutionary theory suggests that men place more emphasis than women on the ____ of a potential mate
a. social status b. youthfulness c. ambition d. intelligence