Fast growing Salmon to me would be a freak of nature. Most likley some idiot put some steriods in the ocean, but also must mean something is happening with where they live and they are trying to adapt to what has happened.
Hmmm how? By asking a question or
To be a formal debate, the debate must include set rules and guidelines.
The teacher or the person who is in charge of the debate should make clear rules and guidelines about what is permitted and what is not in a debate if it is to be a formal one. It doesn't have to include strong opinions if it's a formal debate only - any type of a debate should have that. Personal attacks are not necessary for any debate, as is unlimited time to talk. However, rules and regulations are indeed important.