People around the world rely on the amazon rainforest for the following resources expect ?

There's lots of resources that the Amazon rainforest provides to the people around the world, of which the most important ones are:
- Fresh water; it contains around 20% of the world's fresh water.
- Oxygen; it is the biggest producer of oxygen on the planet.
- Food; healthy food distributed all over the world.
- Medicinal plants; thousands of plants that can cure and prevent most of the known diseases.
- Minerals; gold, copper, silver, zinc, tin...

Ibelieve the answer would be a large-scale natural disaster