natural water bodies are not regularly cleaned whereas an aquarium needs regular cleaning.why?
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Explanation:
Because in natural bodies water can flow in any direction and it has vast volume so only little percent of contaminates wil not effect whereas in aquariam it is a small box where water and is motion is limited and the contaminates will affect
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Because the waste material generated by animals will go on accumulation in water. This will change the chemical and physical nature of water and will adversely affect photosynthesis and will be detrimental to fishes.
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