We do not clean ponds or lakes but an aquarium needs to be cleaned periodically. Why?
BiologyClass 10ICSEAnswered 27 Mar 2026
Answer
Ponds and lakes are natural ecosystem and they contain decomposers. Decomposers act as cleansing agents here, whereas an aquarium is an artificial ecosystem, it does not contain decomposers that cleanse it. Hence, an aquarium needs to be cleaned periodically
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