These warm, wet climates of the tropics are host to the greatest biodiversity, or number of different species, on Earth.
Picture a dense, tropical jungle. These warm, wet climates of the tropics are host to the greatest biodiversity, or number of different species, on Earth. From multicolored dart frogs to tall trees and sleepy sloths, the rainforests of the Amazon have some of the most unique species on Earth. In fact, scientists estimate that there are over 100,000 unique species in the Amazon rainforest alone, with more being discovered each year.