Explanation

A biological community together with its physical (abiotic) environment — whether a pond, an ocean, a forest or an aquarium — is defined as an ecosystem, a term introduced by A.G. Tansley. A 'community' alone denotes only the interacting populations of organisms, without the environment. A 'biome' is a far larger regional unit (e.g., desert or tundra), not a pond or aquarium. Since the question explicitly includes the environment, the correct term is ecosystem.