南极大陆是世界上污染最少、最洁净的陆地之一。也许你会想,既然南极如此寒冷,空气又十分干燥,没有污染,没有灰尘,那里肯定不会有细菌。实际上,南极大陆的孤立状态和严酷的自然条件虽然在极大程度上抑制了细菌的传播,但南极还是有细菌生存,只是它的量极少罢了。科学家们曾经做过调查,在气温达-60℃左右,没有任何有机物质的南极内陆地区,每半升 The Antarctic continent is one of the least contaminated and the cleanest in the world. You may think, since the Antarctic is so cold, the air is very dry, no pollution, no dust, there will certainly be no bacteria. In fact, although the isolated state of the Antarctic continent and its harsh natural conditions have greatly inhibited the spread of bacteria, the Antarctic still has bacteria, but its quantity is extremely small. Scientists have done a survey, in temperatures up to -60 ℃, there is no organic matter in the Antarctic inland areas, every half liter