Aquariums need to be cleaned once in a while,whereas ponds or lakes do not require any cleaning. Explain.

(N/A) An aquarium is an artificial and incomplete ecosystem. It lacks the necessary decomposers and a balanced food chain to break down waste products effectively.
In contrast,ponds and lakes are natural,self-sustaining ecosystems. They contain a diverse range of producers,consumers,and decomposers (such as bacteria and fungi) that naturally recycle waste materials and maintain ecological balance.