A.   a behavior among species of animals that have ethics and values

B.   occurring when an individual behaves in a way that benefits another individual

C.   survival of the fittest

A.   relatedness between the actor and recipient

B.   memory

C.   exclusive fitness

A.   Fitness benefit to both the recipient and the actor

B.   Fitness benefit to the recipient and a fitness cost to the actor

C.   Fitness cost to the recipient and a fitness benefit to the actor

A.   Immediate fitness benefit to both the recipient and the actor

B.   Immediate fitness benefit to the recipient and a fitness cost to the actor

C.   Immediate fitness cost to both the recipient and the actor

A.   Bee that stings an animal to protect the hive

B.   Who gains the benefits of cooperation without paying a cost

C.   Who sat next to you in fifth grade

A.   Mutualism

B.   Male aggression

C.   Reciprocal altruism

A.   False: altruism is not possible

B.   Between related individuals who share genes

C.   Regularly between chimps and gorillas

A.   Reciprocal altruism

B.   Wedding crashers

C.   Group selection

A.   Mutualism

B.   Reciprocal altruism

C.   Kin selection

A.   W.C. Fields

B.   kin selection

C.   reciprocal altruism