Which of the following is an artificial ecosystem?

Correct option is D

The correct answer is (d) Fish Tank
Explanation:
· Definition: An artificial ecosystem (or man-made ecosystem) is one that is created and maintained by humans. It does not possess a self-regulating mechanism like natural ecosystems.
· Why Fish Tank? A fish tank (aquarium) is a classic example of an artificial ecosystem. Humans must construct it, provide food, clean the water, and maintain oxygen levels. Without this human intervention, the system would collapse.
Additional Information (Other Options):
· (a) Grassland, (b) Lake, and (c) Forest: These are all Natural Ecosystems. They formed naturally over time and are self-sustaining. They function through complex interactions between biotic (living) and abiotic (non-living) components without the need for human assistance.
Information Booster:
· Key Characteristics: Artificial ecosystems typically have lower genetic diversity compared to natural ones and often have incomplete nutrient cycles (requiring external inputs like fertilizers or fish food).
· Other Examples: Besides aquariums, other common artificial ecosystems include crop fields (agriculture), zoos, botanical gardens, and dams.
· Largest Ecosystem: The aquatic ecosystem (Oceans) is the largest natural ecosystem on Earth.