In the movie Spy Kids, Carmen and Juni use rebreathers instead of a scuba tank and/or snorkel tube when swimming underwater.  They inhale and exhale through a cartridge that contains potassium superoxide (KO2).  How does this provide air to breathe and eliminate any harmful byproducts that are present when exhaling?

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Q: 1. What is the function of carbon filter in water treatment?

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Environmental Pollution

Environmental pollution occurs due to some unwanted alteration in the surroundings which results in unfavorable effects on all organisms of that surrounding.