Which of the following is true of the time measurement systems used by ancient mesoamerican and south american cultures a. the incas, aztecs, and mayans all had calendars. b. the incas and aztecs had calendars, but the mayans did not. c. the incas and mayans had calendars, but the aztecs did not. d. the incas had calendars, but the mayans and aztecs did not

One day as your professor is driving to work, another driver runs through a red light and hits his car. the professor is shaken up but survives the accident. however, the next time he starts to enter the intersection,he becomes nervous and fearful. soon,he starts going to work via another route to avoid the intersection even though this route adds twenty minutes to his commute in each direction. according to the principles of classical conditioning, why does the professor become scared of the previously harmless intersection? what can he do about this, as going via other route is very time consuming? be specific. break down the situation into its parts and show how the principles of learning apply.

Why did the crew of the zong ship throw some captive africans overboard? a. there was not enough space in the ship. b. the captives’ deaths were covered by insurance. c. the ship did not have adequate food. d. the ship did not have sufficient crew to care for the sick captives. e. the african captives rebelled against the crew.

What was the goal of the united states' invasion at the bay of pigs?