https://www.greenpeace.org/international/story/80585/warned-new-leak-mazon-river-basin-halts-drilling-petrobras/
Around 15 thousand cubic meters of drilling fluid leaked out of the well where Brazilian oil company Petrobrás has been drilling, near the Amazon River Basin.
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https://www.thoughtco.com/countries-of-the-amazon-river-basin-1435517
There are six countries included in the Amazon River Basin in South America, including Brazil, Peru, Columbia, Bolivia, Venezuela, and Ecuador.
amazon river basincountries