Question

which is the largest organizational level found in one coral reef? organism population ecosystem biome

Explanation:

An organism is a single - living entity. A population is a group of the same species. An ecosystem is a community of living organisms and their physical environment. A biome is a large region with distinct climate and characteristic plant and animal communities. In a coral reef, the ecosystem encompasses all the living organisms (corals, fish, etc.) and their interactions with the non - living components like water, sand, etc. It is larger than an organism or a population. A biome is much larger than a single coral reef.

Answer:

C. ecosystem