For example, ecoregion is a term used in environmental geography, cultural region in cultural geography, bioregion in biogeography, and so on. The field of geography that studies regions themselves is called regional geography.n the fields of physical geography, ecology, biogeography, zoogeography, and environmental geography, regions tend to be based on natural features such as ecosystems or biotopes, biomes, drainage basins, natural regions, mountain ranges, soil types.
The Rockefeller Center Christmas Tree is a large Christmas tree placed annually in Rockefeller Center. The centerpiece of Rockefeller Center is the 70-floor, 872 ft (266 m)-tall building at 30 Rockefeller Center, centered behind the sunken plaza. It is alternatively known as the Comcast Building and 30 Rock (also the name of a comedy television show), and formerly known as the RCA Building and then the GE Building.
About the Rockefeller Center Christmas Tree: The Christmas tree that adorns Rockefeller Center is typically a Norway Spruce. The minimum requirement is that the tree be  65 feet tall and 35 feet wide, however manager of Rockefeller Center gardens prefers the tree be between 75 and 90 feet tall and proportionally wide.