Following an oil spill in the gulf of mexico, a population of fish evolves increased intolerance to oil over a period of several generations. which statement is most likely true?

Where's the picture of the model?

Although i don't know what is the simulated system, starfish are predators that eat mostly  microalgae,  snails, sponges, bivalves, mussels and other small marine animals. removing starfish from any system would definitely increase this animals that they prey.

Yes yes yes very good