Book_Sea t1_jabg3u5 wrote
Reply to comment by Spiritual_Jaguar4685 in ELI5: Why is it that when fertilizers make their way into waterways, all the oxygen disappears, killing the fish? by Psychological-Dog994
Algae doesn’t breathe up all the water oxygen. They are plants. It is the decomposers who eat all these small creatures who use the oxygen.
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