What roles do chemists and physicists play in researching hominids? They do the digging to uncover the fossils. They take the aerial photos to find potential dig sites and identify how people used the land. They develop techniques to measure radioactivity in order to determine the age of fossils and artifacts. They write reports identifying the potential culture of the hominids.

Which situation would be considered an example of the freedom of association? a. three students write a letter to a local newspaper demanding that a teacher be fired. b. a group forms on a college campus to support a particular political candidate. c. an individual purchases a membership to a local gym. d. a religious organization buys several local lots in order to construct a new church building.