Chimpanzee attacks on members of other groups can be extremely brutal and result in severe injury or death. never result in injury. are definitely motivated by territoriality. are so rare that only one or two have been observed. always occur in the form of displays and nothing more.

severe injury or death

brain development. a child's brain undergoes an amazing period of development from birth to three—producing more than a million neural connections each second. the development of the brain is influenced by many factors, including a child's relationships, experiences and environment.

explanation: