Answer:
Star fish (sea stars) prey on mussels and if the sea stars are removed from the environment, the mussel population will greatly increase and other organisms may have difficulty living in that environment.
Starfish are known as keystone predators. They prey upon species like urchins or mussels that can have a negative impact on the ecosystem if their populations grow too much. However, if the Starfish don't prey upon urchins and mussels those population could grow and take over the ecosystem and create many problems for other species.
Step-by-step explanation:
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