Pic Title: Moss as an indication of the degree of air pollution plant Related Phrase: 苔藓: 作为空气污染程度的指示植物 Related pictures: Moss as an indication of the degree of air pollution plant Source: http://club.jledu.gov.cn/ Pic Description: 　　Original submission] "algae, moss and ferns" instructional design - Tongyu II - Guo Baozhi air pollution levels indicator plants? Translated by Google No. / 3 Picture               Slide Show

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