Learned behavior
This is because instinct drives them to eat and find food, but they have to learn that a certain feeder is always out and available
Plate tectonics,millions of years of the earth being pushed up by earthquakes
The ohio river is the answer
Ridge push is a process in which the unlifted ridge is thought to push the oceanic plate towards the subduction zone. Slab pull is a process where by the weight of a subducting plate help to pull the trailing lithosphere into subduction zone. Ridge lush is cause by the potential energy gradient from the high topography. Slab pull is caused by negative buoyancy of the subducting plate.
I put texture and I got it right