Question

this is an invisible force that pulls objects toward each other and causes erosion by pulling rock and other materials downhill. options: gravity, rubble, continental drift, pangaea

Explanation:

The description is about an invisible force pulling objects toward each other and causing erosion by pulling materials downhill. Gravity is the force that attracts objects towards each other and is responsible for processes like mass wasting (which includes erosion of rock materials downhill). Rubble is broken rock, continental drift is about movement of continents, and Pangaea is a supercontinent. So the correct term matching the description is gravity.

Answer:

gravity