Best answer gets

a population of coastal fish show signs of die-off when there are no known predators or environmental stressors in the area. what is the most likely explanation for what has happened to this population?

the population reached carrying capacity for the area.
the population evolved with a shorter lifespan.
the population reached its emigration period.
the population evolved with new eating habits.

the most likely case would be that population reached the carrying capacity of the area.

Explanation:

Explanation:First off the population of the prey that is the "coastal fish" In this case will increase in population and acquire a greater area for their survival and will start to (die-off).when the predators in an area are reduced or get extinct this change triggers a reaction called as "tropic cascade" in the ecosystem in which the change in the predator population has affects on the food web.

For example :when the wolves were eliminatefls from the American west, there were changes in the elk population and the vegetation the elk ate.

Therefore both preys and predators balance each other.

answer: blah

explanation:

bc blah

did you fail the test? xd