AP BIOLOGY

Detailed explanation-1: -Tropical rainforests are unique in the high levels of biodiversity they exhibit. Around 40% to 75% of all biotic species are indigenous to the rainforests. Rainforests are home to half of all the living animal and plant species on the planet. Two-thirds of all flowering plants can be found in rainforests.

Detailed explanation-2: -Tropical rainforests are the most biologically diverse terrestrial ecosystems in the world. The Amazon rainforest is the world’s largest tropical rainforest. It is home to around 40, 000 plant species, nearly 1, 300 bird species, 3, 000 types of fish, 427 species of mammals, and 2.5 million different insects.

Detailed explanation-3: -People are fascinated by the amazing diversity of tropical forests and will be surprised to learn that robust estimates of the number of tropical tree species are lacking. We show that there are at least 40, 000, but possibly more than 53, 000, tree species in the tropics, in contrast to only 124 across temperate Europe.

Detailed explanation-4: -Over 3 million species live in the rainforest, and over 2, 500 tree species (or one-third of all tropical trees that exist on earth) help to create and sustain this vibrant ecosystem. More and more, biodiversity is at risk.