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臭氧層損耗是怎樣形成的?

地球大氣層上的平流臭氧層透過吸收太陽有害的紫外線來保護我們。但在超過20多年前,南極上空的臭氧層

全球暖化是怎樣形成的?

地球的熱力維持著一個平衡 : 太陽的熱力在日間使這行星溫暖起來;在晚上則會散發到地球的大氣層外。


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