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.
For the Rockefeller Center building, see 30 Rockefeller Center. Comcast Center is a skyscraper in Center City, Philadelphia, Pennsylvania, United States. The 58-story, 297-meter (974 ft) tower is the tallest building in Philadelphia and the state of Pennsylvania, as well as the twenty-first tallest building in the United States.