Weathering is
a. caused by the movement of materials over rocks
b. not a natural process
c. a process whereby rocks are broken down by direct contact with the atmosphere
d. all of the above

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?

What was the main motivation for the early populists

Based on this map, what can be concluded about the inca empire? (4 points) it was in a highlands region. it was in a mountainous region. it was in the amazon basin. it was in north america.