AP BIOLOGY

Detailed explanation-1: -Although they cover less than 2 percent of Earth’s surface, rainforests house more than 50 percent of all plants and animals found on land. Here are some examples of the richness of rainforests: Rainforests have 170, 000 of the world’s 250, 000 known plant species. That’s more than two-thirds of all plants!

Detailed explanation-2: -Roughly half of the world’s species can be found here, with an estimated 40 to 100 or more different species of trees present in each hectare. Tropical rainforests are the most biologically diverse terrestrial ecosystems in the world. The Amazon rainforest is the world’s largest tropical rainforest.

Detailed explanation-3: -The bulk of the world’s tropical rainforest occurs in the Amazon Basin in South America.

Detailed explanation-4: -Because tropical rain forests are some of the oldest ecosystems on earth, they are home to a diverse population of plants and animals. In fact, around 50% of the world’s land-dwelling plants and animals can be found here-with new species still being discovered.

Detailed explanation-5: -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.