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Biology, 03.08.2019 02:30 saltytaetae
Intense uv light from the sun is lethal to living things. currently, some 99% of all incoming uv is blocked by the ozone layer which didn't develop until well after the first life-forms. how might the very earliest organisms have avoided the intense uv rays?
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Intense uv light from the sun is lethal to living things. currently, some 99% of all incoming uv is...
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