7 Incredible Facts About the Amazon Rainforest 1. Biodiversity The Amazon Rainforest is one of the most biodiverse places on Earth, hosting approximately 10% of the known species. This rich biodiversity includes an estimated 40,000 plant species, 1,300 bird species, 3,000 types of fish, 430 mammals, and 2.5 million different insects. The rainforest’s dense and…