Why is the Amazon Rainforest called the lungs of the world?
The Amazon in South America is over 2.1 million square miles of rainforest, which is more than half of the rain forest on the entire planet.
Trees use the sun to create glucose from water and carbon dioxide. In the process they release oxygen into the air.
Hence, the Amazon gets the nickname “the lungs of the world” because it is responsible for so much production of oxygen.