Biology, 28.10.2020 19:00 mariahrmunoz01
Recently, due to rapid urbanization and mechanization residents of a city are suffering from harmful effects of the ultra violet rays. Depletion of which layer is likely to have led to this situation? A. oxygen B. carbon dioxide C. nitrogen D. ozone E. methane
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Biology, 21.06.2019 23:20, towelmearowel
What are the most explosive events that occur on the sun? umbras solar flares solar winds prominences
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