Hills, plateaus, and canyons are all examples of

Landforms

Explanation:

These are the examples of the primary secondary and other tertiary landforms that are formed by the various geomorphic process at work as they include the erosive and depositional agents on the planets and thus they are categorized as the landforms. These are formations of the mountains ranges like the  hill is a small type of the formation that is impacted by the development of the rugged landmass and the plateaus are a formation of the tablelands that have a volcanic history but are leveled to the surface and the canyons are a example of the sedimentary rocks that formed the features by the help f the rover as an agent of change. Similarly, the landform also tends to occur in the oceans and the underground formation of rocks landmass.

The answer would be plant growth.