6. Refer to the picture below to answer the question.

An illustration of Earth showing the lines of latitude associated with high- and low-pressure belts and winds. The latitudes listed are: Zero degrees, 30 degrees north and south, 60 degrees north and south, and 90 degrees north. Ask your teacher to describe the illustration to you.

Which of the following is most responsible for the moving bands of air around Earth that are shown in the picture?

conduction
convection
Coriolis effect
greenhouse effect