- 问题详情:Inarainforesttherearetalltrees.Thetopofthesetreesiscalledthecanopy.Scientistswanttolearnaboutthecanopy.Theywanttolearnabouteverythingthatlivesthere.Butithasnotbeeneasytogettothecanopy.MegisanAmericanbiologist,ecologist,explorer,writer,educato...
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