Conduction, convection, and radiation
I think it's 90% but I am not sure.
Herbivores: Bubbles (yellow tang), Bruce (turtle), Dory.
Carnivores: The three sharks. Chum (maiko shark), Bruce (great white shark), Anchor (Hammerhead shark).
What visual you have evidence would he have to see on the microscope slides to support his claim: moving components
What would be the source of the bubbles? oxygen creation