Final answer:Cyanuric acidis used to protect free chlorine from the negative effects of ultraviolet (UV) sunlight. Chlorine can also be affected by chlorofluorocarbons (CFCs) which are known for their role in destroying ozone molecules. In water treatment, chlorine helps oxidize and remove organic or biological materials.Explanation:Cyanuric acid, often used as a stabilizer in swimming pools, works to protectfree chlorinefrom the detrimental effects of sunlight, specifically UV radiation. Chlorine can also be impacted by chlorofluorocarbons (CFCs), which are known to destroy ozone molecules due to their stability and longevity. In the context of water treatment, chlorine is frequently used to oxidize and destroy organic or biological materials, contributing to water purification and bleaching processes.However, the application of chlorine is not free ofdrawbacks. In some instances, chlorine-based compounds may not completely eliminate certain organisms from contaminated water, like the protozoan parasite Cryptosporidium. Furthermore, some chlorinated compounds, such as chloramines, may cause irritation to skin, eyes, or noses of certain individuals.Learn more about Cyanuric Acid and Chlorine here:brainly.com/question/31562927#SPJ11...

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