| 41. | Without ozone, the Earth has no protection from ultraviolet rays.
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| 42. | Concentrating attention on ultraviolet rays indeed, on sunlight itself could mean precluding better explanations.
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| 43. | Ozone is a natural gas in the stratosphere that filters ultraviolet rays from sunlight.
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| 44. | Glenn said the kaolin coat reflects the heating infrared wavelengths and burning ultraviolet rays.
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| 45. | They help deplete the ozone layer, allowing ultraviolet rays to cause deadly skin cancers.
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| 46. | Ozone is the protective layer that blocks damaging ultraviolet rays.
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| 47. | Sunscreen manufacturers recognize that all ultraviolet rays are harmful, not only those that burn.
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| 48. | Wear hats with a brim and wraparound sunglasses that keep out the ultraviolet rays.
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| 49. | Phoenix has no more ultraviolet rays than cloudy Seattle.
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| 50. | Ultraviolet rays from the sun can affect the printers.
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