It's pronounced "ensemble" by the way. And, one way that a pianist would have a role would be by being in the background as an example and playing his part. He's going to play what he needs to play. The question does seem a little to vague, but truly, I would say simply, that the person who is playing it, just plays his part as they all make music sound good.
Finding the right pitch and matching it with others around you, stay on key!
Not sure if this is helpful but The Chemistry Behind Candy Science
These two monosaccharides are glucose and fructose. Because of the sucrose molecule structure we can make all kinds of candy just using sugar and a liquid, and sometimes a bit of fat. When you heat the sucrose molecule to the right temperature it breaks apart and forms caramel.
The Tell Tale Heart is a good coparison of some challenges many eighth graders might face. Including, the guilt of lying or deceiving someone and being extremely annoyed by someone or something.
