An ecosystem is defined as a community of living organisms (biotic components) interacting with the nonliving components (abiotic components) of their environment. The examples given (pond, ocean, forest, aquarium) all represent systems where plants, animals, and other organisms live and interact with physical and chemical factors like water, soil, air, and sunlight.
A biological community in its environment such as a pond, an ocean, a forest, even an aquarium is known as
Asked in UPSC CDS 2 2017 · Topic: Ecology (Ecosystem: Structure and Components)
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