Answer:
Courtney's statement: Disagree
All organisms even which do not depend on plants s food have an indirect connection with the plants. The consumers on which these animals feed somehow are dependent on the primary consumers which feed on plants.
Jose's statement: Disagree
Even if the organisms learn to eat other things, yet every other organism will be dependent on the producers such as plants in some way or the other.
Raquan's statement: Agree
All the organisms will eventually die even if they change their food because the food chain or food web always starts with the producers.
Mike's statement: Disagree
All the organisms will die as there will be no primary source of nutrition.
Keisha: Agree
The population of the mammals will decline.
Alex: Disagree