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Q58: Animals that have successfully fought to get
Q73: The fact that human aggression varies widely
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Q119: In an experiment by Ancel Keys,36 male
Q198: Today's researchers have identified many different chromosomal
Q245: A wide economic gulf between a country's
Q320: Ellie is unusually attractive and intelligent,and she
Q406: Shortly after learning that he did not
Q460: For a thirsty person,drinking water serves to
Q468: Researchers in one experiment gave people cash