The document discusses tropical rainforests, describing their global locations, layers, diverse wildlife, valuable resources for medicine and people, and ongoing threats of destruction. It notes that rainforests are found in South America, Central America, Africa, Asia, and Australia, and contain forest floor, understory, canopy, and emergent layers. Millions of plants, insects, reptiles, amphibians, birds, and animals live in rainforests, which also provide homes, medicines, and sustenance for human communities. However, the rainforests are currently being destroyed, threatening their wildlife and resources, though individual actions may help conservation efforts.