c) Puerto Rico

The only tropical rainforest in a U.S. national park can be found in Puerto Rico, in the El Yunque National Forest. This rainforest is renowned for its biodiversity, featuring a variety of unique flora and fauna, including rare orchids and wildlife. El Yunque’s lush landscape, waterfalls, and hiking trails offer visitors a glimpse into a vibrant, thriving ecosystem. As a U.S. national forest, it plays a crucial role in conservation efforts and environmental education, showcasing the importance of preserving natural habitats and the richness of tropical ecosystems.