Exposure to sunlight is generally an unavoidable consequence of being alive and life on Earth relies on the ozone layer to attenuate biologically harmful ultraviolet

B (UVB: 280-315 nm) wavelengths of the solar spectrum. While ozone depletion has initiated concern about the effects of increased UVB on the biosphere, UVB filtered through a normal ozone column is still a considerable environmental stress. UVB exposure can cause declines in growth and reproduction that can eventually lead to reduced productivity or death; and although damage and protective/repair mechanisms are common across taxa, there is wide species-specific variation in UVB responses. In order to understand the ecological impact of the ozone layer as a UVB filter, the UV photobiology of species, populations, and individuals needs to be understood in the context of primary productivity, biodiversity, trophic energy transfer, and biogeochemical cycling.

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10 Ways To Fight Off Cancer

10 Ways To Fight Off Cancer

Learning About 10 Ways Fight Off Cancer Can Have Amazing Benefits For Your Life The Best Tips On How To Keep This Killer At Bay Discovering that you or a loved one has cancer can be utterly terrifying. All the same, once you comprehend the causes of cancer and learn how to reverse those causes, you or your loved one may have more than a fighting chance of beating out cancer.

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