According to the Defenders of Wildlife, the Top Three Most

Multiple Choice

According to the Defenders of Wildlife, the top three most endangered ecosystems in the U.S. include:

A) Northwestern grassland, Heartland savanna, and California native grassland
B) South Florida landscape, Southern Appalachian spruce-fir forest, and longleaf pine forests and savannas.
C) Alaskan tundra, Hawaii's rainforest, and coastal wetlands
D) Bogs, Arizona's deserts, and Rocky Mountain evergreen forests