False. Thousands and thousands of animals and plants live in rainforests, including many birds, insects, reptiles, and plants. There is great biodiversity. True. The text states that the ground in rainforests is always wet. False. The text says that 75% of the world's species live in rainforests, not 50%. True. The text explains that plants and trees in rainforests grow in different layers with their own levels of light and humidity. True. The passage specifically mentions that many of our medicines come from rainforests.