The conveyor belt model: a. looks at cyclones in two dimensions. b. has less explanatory power than does the cyclogenesis model. c. does not account for the comma-shaped cloud pattern often associated with cyclones. d. focuses on three major flows of air.

Answer: d. focuses on three major flows of air

Explanation:

The conveyor belt model is a three dimensional way of viewing cyclones. It shows the upper flow of three air streams: the warm, the cold and the dry air streams through the life cycle of a cyclone.

This model it is a development on older illustrative models such as the Bergen model by providing information about upper air interactions as well as clouds and precipitation associated with cyclones.