Sentences with phrase «ultraviolet radiation from the sun known»
The ozone layer is crucial since it blocks out the harmful ultraviolet radiation from the sun known to increase the risk of skin cancer and cataract damage, in addition to other harmful effects on plants and animals.
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«Now we know that ultraviolet radiation from the sun or indoor tanning is a cancer - causing carcinogen.
The United States Department of Health and Human Services proclaimed in 2002 that ultraviolet (UV) radiation from the sun and artificial sources, such as tanning beds and sun lamps, is a known carcinogen.