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