One type of climate found in the United States but not in Canada is

Desert/Arid Climate

Explanation:

Since Canada is further North on the globe, closer to the North Pole than most other countries, a desert/arid climate cannot develop properly. Though arid climates are most common in Southwestern parts of the United States, such as southern inland California, Arizona, Nevada, and New Mexico.

heat from the core of the earth causes convection currents to occur in the mantle. these currents slowly move the crust around.