The lowest layer, the troposphere troposphereThe region of the atmosphere closest to the Earth. The Earth's atmosphere is composed of several layers. Scientific Assessment of Ozone Depletion: 2018 I. will, over time, damage crops and lead to higher skin cancer and cataract rates. NASA provides more information on their web site (). UVC is completely absorbed by ozone and normal oxygen. UVB is mostly absorbed by ozone, although some reaches the Earth. The sun produces UV, which is commonly split into three bands: UVA, UVB, and UVC. Less ozone-layer protection from ultraviolet (UV) light ultraviolet (UV) lightUltraviolet radiation is a portion of the electromagnetic spectrum with wavelengths shorter than visible light. protects all life from the sun's harmful radiation, but human activities have damaged this shield. The science page () offers much more detail on the science of ozone depletion. Depletion of this layer by ozone depleting substances (ODS) will lead to higher UVB levels, which in turn will cause increased skin cancers and cataracts and potential damage to some marine organisms, plants, and plastics. The ozone layer lies approximately 15-40 kilometers (10-25 miles) above the Earth's surface, in the stratosphere. The Earth's ozone layer ozone layerThe region of the stratosphere containing the bulk of atmospheric ozone.
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