Modernmanhasclearedtheforestsforfarmlandandforwood,andh...
问题详情：Modernmanhasclearedtheforestsforfarmlandandforwood,andhasalsocarelesslyburnedthem.Morethanthat,though,hehasalsointerfered(干预)withtheinvisiblebondsbetweenthelivingthingsintheforests.Therearem...