Fire Frequency: The Everglades and Big Cypress National Preserve are the most fire-prone ecosystems in the National Park Service system.
(Fire Frequency; are; the most fire-prone ecosystems in the National Park Service system) (Preserve; [is] National [of]; Big Cypress)
Fire Frequency Preserve
are [is] National [of]
the most fire-prone ecosystems in the National Park Service system
Big Cypress