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lesley lesley
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6 years ago
Which statement about reciprocal altruism is most accurate?
 
  a. Reciprocal altruism is a strictly human phenomenon and observed only in mature adults.
  b. Reciprocal altruism is a strictly human phenomenon that has been observed throughout the lifespan.
  c. Reciprocal altruism occurs in humans and non-human primates but not in non-primate animals.
  d. Reciprocal altruism has been demonstrated in non-human primates as well as non-primate animals.
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yuchia.fangyuchia.fang
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6 years ago
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lesley Author
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6 years ago
Thanks
2ne1_12345
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Yesterday
this is exactly what I needed
emilyas19
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2 hours ago
Just got PERFECT on my quiz
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