Which statement about communication among nonhuman primates is false?
a. Gorillas use calls and facial expressions to communicate.
b. Nonhuman primate call systems are inflexible.
c. Nonhuman primates use closed systems of communication.
d. Animal call systems are based on tradition and not genetics.
e. Communication among primates is more complex than scientists used to think.
Question 2
Research on chimpanzee communication shows that they
a. possess the physical means of speaking like humans.
b. can communicate subtle shades of meaning.
c. use a closed communication system.
d. can combine one or more sounds to create a large number of meanings.
e. can express opinions about abstract ideas.