Carl thought he understood what Grafting was. He was silently writing down notes previously because he had no idea how to answer the question. Now at least, he had a general idea of what they were dealing with today.

Reading over the notes he had jotted down - there was a lot of information - the Hufflepuff stood up and went to the back of the classroom where the legumes and anti-pollutants were. He picked a honey-locust tree and a mahogany, which he carried carefully to his desk.

So, what were the Professor's questions, again?