What is a tropical rainforest? Objective Students will be able to: 1. Define the vocabulary terms tropical rainforest, native, and endemic. 2. Identify five different tree species that live in American Samoa's tropical rainforest ecosystem. 3. Describe how our actions can threaten the health of our tropical rainforest ecosystem. 4. Learn about the role of the National Park of American Samoa in conserving our tropical rainforest. Background One of the significant characteristics of tropical rainforests is high species diversity. Tropical rainforests are home to the majority of the world’s plant Duration: 60 Minutes.