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What reduces oxygen is ponds?

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Anonymous

14y ago
Updated: 8/18/2019

this is correct as the fish cause a bacteria to be generated as they are in a cramped environment. this bacteria saps oxygen from the fish, so the fish in the pond take more oxygen. then the plants take in more oxygen to try and compete so they can respire (not photosynthesize.

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Wiki User

14y ago

What else can I help you with?