Elise was trying to figure something out that everyone hadn't said and probably wasted a bit too much time doing that since she missed her chance. Simply copying down what Spike had said because he did get the question right, she beamed. He was a Ravenclaw for very obvious reasons, unlike Elise. Spike was... just really smart. And good at everything.

Now she had to figure out what an ecosystem was. She was no stranger to these, since she'd been preparing for this term's OWLs since the Summer after her third year. Beaming, she raised her hand. "An ecosystem is essentially an environment in which living and non-living organisms communicate and balance each other out." And it was important that the balancing part was there, or else species would go extinct.

Like the hammer-head plimpy.