WalkthroughtheAmazonrainforesttodayandyouwillfinditstea...
問題詳情：WalkthroughtheAmazonrainforesttodayandyouwillfinditsteamy,warm,dampandthick.Butifyouhadbeentherearound15,000yearsago,duringthelasticeage,wouldithavebeenthesame?Formorethan30years,scientistshav...