The way the Amazon River disrupts Chicago is that a lot of our air come from the Amazon. The medicine we rely on as Chicagoans also rely on the Amazon to continue as a source of ingredients for our medicine.
Humans cause disruption in ecosystems even when they are aware of the potential threats for profit. As seen today, one company destroyed a section of the amazon river in order to extract the gold there. They either really like gold or really like money. However this causes the Amazon River to shrink and be exploited. If I had to propose a situation I would propose that the outskirts of the Amazon may be extracted for its natural resources, however, companies that go to far in destroying it must rebuild it to original standards.