Landforms
A large, mostly flat area with few to no trees.
A plain
The ocean bordering western North America
The Pacific Ocean
A generally warm and wet climate common in the Caribbean
A Tropical Climate
A biome of nonsalty lakes, ponds, rivers, and streams
Freshwater Biome
The mineral-rich geological region covering much of Canada
Canadian Shield
The range stretching from Canada through the western United States toward central New Mexico
The Rocky Mountains
The five lakes connecting Canada and the United States
The Great Lakes
A climate between very warm and very cold
A Temperate Climate
A biome made up of areas with many trees
Forest biome
The island region south of the Gulf of Mexico with a tropical climate and coral reefs
This desert, found in parts of California, Nevada, Arizona, and Utah, is the driest desert in North America.
The Mojave Desert
The longest U.S. river, which joins the Mississippi in Missouri
The Missouri River
Permanently frozen ground found in the coldest northern regions
Permafrost
A cold, dry biome with a short growing season and few plants
Tundra
The Puerto Rico rainforest that is the only tropical rainforest in the U.S. forest system
El Yunque National Forest
A landform surrounded by water on three sides
A peninsula
The second-longest U.S. river, which flows through 10 states to the Gulf of Mexico
The Mississippi River
The line marking the northern edge of the tropics through Mexico
The Tropic of Cancer
A biome where grasses and shrubs provide food for animals
Grassland Biome
The two deserts in northern Mexico
The Sonoran and Chihuahuan Deserts
The below-sea-level low point in the Mojave Desert known for extreme heat
Death Valley
The largest U.S. bay, fed by more than 150 rivers
The Chesapeake Bay
Factors that affect mountain climates and rainfall
Elevation and distance from the ocean
An ocean habitat, including areas around coral reefs
Marine Biome
The north–south mountain ranges that help create a rain shadow in Mexico
The Sierra Madre Mountains