Respuesta :
Answer : Without its keystone species, the ecosystem would be dramatically different or cease to exist altogether.
brainliest please?
Answer:
the health of the ecosystem declines
Explanation:
once this keystone species is lost, it's predators will die off because of lack or food, or feed on other species until those die off and then the predators die off. the keystone species' prey will rise in poulation and compete to th point where those die off too.