Explain how natural selection would have been involved in establishing this
group behavior. *

When the ball is rising up, it gains kinetic energy. when the ball reaches the very top, it will have all potential energy, until it falls back down and gains it kinetic energy. finally when you catch the ball or it falls back down, it would have gained its potential energy back.

The answer is joseph is observing the colour of the reaction mixture to see whether proteins are present in the given solution.