Respuesta :
Answer: The answer would be D. Patches of Lichens on bare rock.
Explanation: The smaller the ecosystem the less stable, which a Savanna has a large ecosystem, Coral Reef in an ocean has a large ecosystem, Rain Forest have a vast ecosystem, with the process of elimination. Therefore, the answer is D. Have a good day! ♡︎
The least stable ecosystem is D patch of lichens on bare rock.
What is stability in ecosystem?
Stability in ecosystem can be regarded as the capability of a natural system to apply self.
It is the regulating mechanisms in ecosystem to return to a steady state after an outside disturbance.
Therefore, option D is least stable.
Learn more about Ecosystem at:
https://brainly.com/question/2189549