- 問題詳情:Rainforests,itturnsout,arenotcreatedequal.TaketheAmazonrainforest,anareathatcoversabout7millionsquarekilometers.Butwithinthathugeexpanseareallkindsofecologicalzones,andsomeofthesezones,saysGregAsner,arealotmorecrowdedthanothers.“Someforestsh...
- 23399