A) chimpanzee groups are seasonal and shortlived rather than lifelong.
B) chimpanzees really don't recognize one another as individuals.
C) chimpanzees tend to respond in a uniform way to the same features of the environment and thus independently, and frequently, end up at the same place.
D) interaction with other chimpanzees is deeply ingrained into every aspect of a chimpanzee's life.

A) conservation of water and heat
B) decreased predation
C) improved foraging
D) interference with reproduction

A) access to food location information from other group members.
B) decreased risk of parasitism.
C) decreased risk of predation.
D) increased probability of killing prey.