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Science - Ozone Basics
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The ozone layer absorbs 97-99% of the sun's medium-frequency ultraviolet light, preventing skin cancer, cataracts, and harm to marine and terrestrial environments. Its depletion, linked to human-made chemicals like CFCs, has spurred global efforts such as the Montreal Protocol, which has led to measurable recovery since its 1987 implementation.
Earth's ozone layer shields life from harmful UV rays, vital for health and ecosystems.