Can someone me answer these questions too

The main message is about the bio engineered fish, and how it could affect the environment.  

Arguments about how the FDA is keeping it secure and sterile prove to make it a good meal.

A stakeholder would be the FDA, and the Aqua-advantage.

The writers attitude may be to inform the readers about this new product that is coming out, and giving little tips on what its origin is.  

it's unlikely a majority of a large population would agree on issues

hope this : )