Which statement best explains why UV light can cause chemical changes in materials even though humans cannot see it?, UV light has wavelengths longer than visible light, so it interacts more strongly with molecules, B. UV light has shorter wavelengths and therefore carries enough energy to trigger chemical reactions, C. UV light is absorbed by the atmosphere before reaching Earth, Which UV type reaches Earth in the greatest amount and why?, . UV‑A, because the atmosphere does not block it effectively, UV‑B, because it has the highest energy, UV‑C, because it passes through the ozone layer easily, Which health effect occurs specifically because UV radiation can damage DNA inside skin cells over time?, Photokeratitis, Skin cancer development, Vitamin D production, Which group is more vulnerable to UV radiation?, Adults with high melanin levels, Children and teenagers, People who work indoors, Which safety action directly reduces the risk of long‑term UV‑related eye damage such as cataracts?, Using SPF 15 sunscreen, Wearing sunglasses that block 99–100% of UV radiation, Avoiding outdoor exercise, Which scientific discovery directly led to UV light being used for disinfection in hospitals and water systems?, UV‑B helps produce vitamin D, UV‑C destroys bacteria and viruses by damaging their genetic material, UV light can cause photokeratitis, Which statement best describes the energy change that occurs during fluorescence?, A molecule absorbs visible light and emits higher‑energy UV light, A molecule absorbs UV light and immediately emits lower‑energy visible light, A molecule reflects UV light without absorbing it.

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