If an ecosystem’s balance is disturbed by a volcanic eruption, what will most likely occur?

I would say that the consumers in the ecosystem would begin to consume carbon dioxide.
Consumers always consume carbon dioxide, whether it's a cause of volcanism or not.

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.

Ais your right answer