Answer: amazonia

AnswerCrossword Clue
AMAZONIAVast river basin
AMAZONIAEndangered South American watershed
AMAZONIAVast rainforest
AMAZONIAWorld's largest rainforest
AMAZONIAEcologically-threatened South American region
AMAZONIARain forest region
AMAZONIAEndangered watershed
AMAZONIAAbout a third of South America