3.why does energy as heat move away from the tropics and toward the pole in the global weather system?
5. a student is reading about predicted upcoming el niño event. in what way could the student expect to see the global weather patterns change?

There are three types of heat transfer or heat propagation; conduction, convection and radiation. Heat transfer is the process by which heat projects externally however, depending on the temperature and pressure. Also called the movement of heat from a low temperatured state which increases as heat progresses.
Conduction is the heat transfer by contact, immediate contact.
Convection is the transfer of heat through air and water.
Radiation is the transfer of heat regardless of the presence of atoms or particles. 

No because a circle or pie graph usually shows percentages you'd need a line graph