Question

please answer the above question​

Answer 1

Answer:

A pond or lake is a natural ecosystem. They are self-sustaining and complete, in then, all the organisms of the food chain are available. If any organism dies, there are decomposers to decompose their bodies into simpler substances.

An aquarium, on the contrary, is an artificial and incomplete ecosystem. The abiotic components are not supplied naturally to it. It may not have all the biotic components in it. If a fish dies in an aquarium in the absence of decomposer, it will lie there as a rotten body, polluting the water of the aquarium. Hence, we need to clean it.

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Answer 2

Explanation:

No it could not be an ecosystem because there are no many organisms except some bacterias

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