____________ Refers to All Optional Vocal Features or Silences That

Q35: Research has shown that English people from

Q36: How does human communication differ from chimpanzee

Q37: The use of more than one language

Q38: A set of sounds that make a

Q39: For which animal have researchers demonstrated the

Q41: Children in the U.S. take English classes

Q42: Compared to people in simpler societies, people

Q43: A _ is a sound to a

Q44: Languages can easily be lost for many

Q45: Anthropologists are not sure when spoken language