The United States is characterized by its diverse landscapes, encompassing a variety of biomes and climates, which are showcased within its 63 national parks. Temperate Deciduous forests, coniferous forests, deserts, grasslands and prairies, mountainous regions, caves, tundra and coastal and marine environments. These diverse biomes and climates contribute to the ecological richness of the United States, making it a country with varied landscapes and ecosystems.