The free oxygen produced by cyanobacteria immediately reacted with soluble iron in the oceans causing iron oxide rust to precipitate out of the oceans. So far problem cells have shown little ability to develop resistance to chlorine dioxide as they can with other sanitizers making it a consistent tool in the sanitation toolbox. Oxygen Requirements For Microbial Growth Microbiology When large populations of decomposing bacteria are converting these waste and by products it can deplete oxygen levels in the water source. . In their long search for answers scientists have often uncovered only more thought-provoking mysteries about what sleep is how it evolved and the benefits that it providesIn this episode Steven Strogatz the noted mathematician author and host of The Joy of Why speaks with Dragana Rogulja an assistant professor of neurobiology. This is why many industrial operations pull in relatively cool water to cool their machinery and l...