Based on what features can an aquarium be considered as an artificial ecosystem. Examples of what other artificial ecosystems can you give?

Unlike natural ones, artificial ecosystems are created and maintained by humans.
The aquarium can be considered as an artificial ecosystem based on the following features:
1) The diversity of organisms is sharply reduced. Man supports uniformity and species poverty with a special complex system of measures.
2) Species cultivated by humans are supported by artificial selection and cannot withstand the struggle for existence without human support.
3) The aquarium receives additional energy and substance through human activity, providing additional conditions for organisms (fish food, oxygen, artificial light, etc.).
4) The production of agrocenosis is removed from the ecosystem and does not enter the food chain. Partial consumption by its pests is in every possible way suppressed by human activity.
Examples of artificial ecosystems are also the field and garden.

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