The principle that states the undisturbed rock sequence has the oldest rocks on the bottom is known as
a. superposition.
b. original juxtaposition.
c. relative age dating.
d. original parallelism

When were the first 10 amendments to the constitution adopted and what was their purpose?

What new form of music swept the nation in the 1950s a. chamber music b. hip-hop c. jazz d. rock-and-roll

Psychologists studying infant memory want to determine at what age babies can remember specific events. an experimenter uses several puppets to demonstrate a series of actions while the infant watches. after a delay, the experimenter records how many of the actions the child imitates when playing with the puppets. what is the dependent variable?