Why would a bouncing ball eventually stop bouncing?

The bouncing ball stops bouncing because of mainly three factors :
1. Friction
2. Gravity
3. Decrease in potential energy

The force of gravity pulls it down, and as the ball falls, its potential energy is converted to kinetic energy. When you drop the ball from a certain height, the potential difference is at its extreme point. When the ball hits the ground, the potential energy naturally decreases, which stops the ball from bouncing after a while.

The purpose of a lab is to do your "expirements" the importance of the topic is so you can now what the story is about and the last one is because no one is me with my question ( what is 3 over 4 x - 9 = 27 maybe you can )