Question

atm and ocean circ: driving forces within the atmosphere
where are friction forces strongest?
above 500 m
at high elevation
at low latitudes
near the surface

Explanation:

Friction in the atmosphere is due to the interaction between air and the Earth's surface. The closer air is to the surface, the more it interacts with rough terrain, buildings, and other surface - features, increasing the friction. Higher up in the atmosphere, there are fewer such interactions, so friction is weaker.

Answer:

Near the surface