areas
freshwater and saltwater
Simple trick to find a subject/verb is to remove words from the sentence until it doesn't make sense anymore: There are (many freshwater and saltwater) areas (in the everglades).
Park
The simple subject is "flowers".
Ken Schultz has written: 'The ultimate book of freshwater fishing' -- subject(s): Fishing, Freshwater fishes 'World Atlas of Saltwater Fishing' 'North American Fishing' 'The Complete Book of Sportfishing' 'Ken Schultz's fishing encyclopedia' -- subject(s): Encyclopedias, Fishes, Fishing 'Ken Schultz's field guide to saltwater fish' -- subject(s): Identification, Marine fishes, Nonfiction, OverDrive, Sports & Recreations 'The ultimate book of freshwater fishing' -- subject(s): Freshwater fishes, Fishing 'The art of trolling' -- subject(s): Trolling (Fishing)
A. L Kontis has written: 'Simulation of freshwater-saltwater interfaces in the Brooklyn-Queens aquifer system, Long Island, New York' -- subject(s): Saltwater encroachment, Groundwater flow
G. Thomas Watters has written: 'A guide to the freshwater mussels of Ohio' -- subject(s): Freshwater mussels, Identification, Mussels 'The freshwater mussels of Ohio' -- subject(s): Identification, Margaritiferidae, Freshwater mussels, Unionidae
Anton Husak has written: 'The saltwater craftsman' -- subject(s): Handicraft, Saltwater fishing
Harold Meisler has written: 'Preliminary delineation of salty ground water in the northern Atlantic Coastal Plain' -- subject(s): Groundwater, Saltwater encroachment 'The effect of eustatic sea-level changes on saltwater-freshwater in the northern Atlantic coastal plain' -- subject(s): Sea level, Groundwater, Saltwater encroachment 'Hydrogeology of the carbonate rocks of the Lancaster 15-minute quadrangle, southeastern Pennsylvania' -- subject(s): Carbonate Rocks, Groundwater, Rocks, Carbonate 'The occurrence and geochemistry of salty ground water in the northern Atlantic Coastal Plain' -- subject(s): Atlantic Coast (U.S.), Geochemistry, Groundwater, Saltwater encroachment, Underground Water, Water chemistry, Water, Underground 'Carbonate rocks of Cambrian and Ordovician age in the Lancaster quadrangle, Pennsylvania' -- subject(s): Carbonates, Geology, Geology, Stratigraphic, Stratigraphic Geology
The subject in the sentence is "you."
Edward C. Migdalski has written: 'Angler's guide to the fresh water sport fishes of North America' -- subject(s): Fishing, Freshwater fishes 'The fresh & salt water fishes of the world' -- subject(s): Fishes 'Angler's guide to the salt water game fishes' -- subject(s): Fishes, Saltwater fishing
A subject in a sentence is who, what, or where the sentence is about.