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We do not clean ponds or Lakes but an aquarium need to be cleaned periodically. Why??

Posted by Swarnima Chauhan 5 years ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 5 years ago

An aquarium is an artificial ecosystem and the organisms present in it are selective and maintained in a restricted environment. In the Aquarium the uneaten food as well as the waste generated by the fishes mixes with the water and is left untreated due to the lack of decomposers. The waste materials thus accumulate in the water making it toxic. Hence an aquarium has to be cleaned after regular intervals.

On the other hand, a pond or a lake ecosystem is a natural ecosystem and the types of organism present in it is balanced. The waste produced in this ecosystem serves as the food material for the decomposers and is thus eliminated by them from the water. This ensures a balance in the water body and keeps the water clean and thus does not require physical cleaning.

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CBSE > Class 10 > Science