28635
Additionally , oil exploitation of the Amazon rainforest has led to the release of billions of gallons of untreated wastes , gas , and crude oil into the environment , contaminating ecosystems and causing detrimental health effects to Amerindian peoples .
 Amazon
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Amazon