What vast subtropical wetland ecosystem in southern Florida, spanning 1.5 million acres, is home to alligators, manatees, and the Florida panther?

• A Okefenokee Swamp
• B The Everglades ✓
• C Great Dismal Swamp
• D Atchafalaya Basin

The Everglades is the largest subtropical wilderness in the country, with a slow-moving river of grass that provides habitat for dozens of threatened and endangered species.