How many creatures live in the rainforest?

Why are rainforests so important? How much rain falls in the rainforest? What are the different levels of the rainforest? For free home activities sign-up at www.WhoSmarted.com   See omnystudio.com/listener for privacy information. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.