She realized that she no longer was in a tropical zone.
Hong Kong lies at the northern fringe of the tropical zone.
The Dominican Republic has a moderate, relatively mild tropical climate, although it lies well within the tropical zone.
Fossils of warm-adapted plants are found up to 60° N and 60° S paleolatitude, suggesting an expanded tropical zone.
The Cretaceous guyots may have resulted from the northward drift of seamounts and reefs on the Pacific Plate away from the tropical zone of favourable growth.
The shallow waters of the tropical zone are characterized by numerous corals and other organisms capable of building together with calcareous red algae reefs and coral islands.
The tropical zone lies generally south of a west-east line drawn from Bradenton along the south shore of Lake Okeechobee to Vero Beach, while north of this line the state is subtropical.
The Tropical Zone, which arcs east and west across the northern margin of the continent and extends halfway down the eastern seaboard, has a mainly dry monsoonal climate, with some wet regions.
Attacks occur most frequently throughout the year in the tropical zone between latitudes 21° N and 21° S; from mid-spring to mid-fall they extend as far north and south as the 42° parallels.
The Temperate Zone, with a cool-to-warm (temperate-to-subtropical) climate and precipitation mostly in winter, is arced across the southern margin, embracing Tasmania and extending up the eastern seaboard to overlap slightly with the Tropical Zone.
In the varied environments of the Tropical Zone, species confined to the rainforests of the mountainous northeast include the tree kangaroos (genus Dendrolagus) and the gorgeous bird-wing butterflies (Ornithoptera).
