<human>:  Why is it called the Amazon jungle?
<bot>: That’s because it is in the Amazon river basin. The Amazon river basin is one of the largest and most biodiverse tropical forests in the world. The Amazon is the world’s largest river system, and it drains an area of approximately 2.5 million square miles, or 8% of the world’s land area. The Amazon basin is also home to the world’s largest rainforest.