It is predation. How?
What do you think will happen if the fox catches the rabbit.
The fox will eat it.
Thus, predator-prey relationship; the fox gets full, and the bunny, well, it's not so good.
A force is a push or a pull that acts upon an object as a results of its interaction with another object. ... These two forces are called action and reaction forces and are the subject of Newton's third law of motion
The aspect of his experimental process which is most important for obtaining reliable results is repeating his data collection many times.