This zone is identified by both area wise and population wise. Area wise it is in Limbo (means it is in uncertain condition or transition phase or keeps on changing). Immediately adjacent to the CBD, it is an area that may be slated for expansion if the business is good. In this zone land and properties are held for speculation purposes. Characterized by mixed

Chrystaller Central Place Theory: Theory was first proposed in the 1930s by German geographer Walter Chrystaller, based on his studies of southern Germany. August Losch in Germany and Brian Berry and others in the U.S further developed concepts during the 1950s. The theory applies most clearly in regions such as the Great Plains, which are neither heavily

It says even though a city may have begun with a CBD, it will have other smaller CBDs develop on the outskirts of the city If other CBDs develop on the outskirts of a city they would be around valuable housing areas to allow shorter commutes to the outskirts of the city. The number of nuclei around which the city expands depends upon situational as

Carbon and Energy Sources for Microbial Growth: Organism must have sources of energy, carbon for synthesis of new cellular material, and inorganic elements (nutrients) such as nitrogen, phosphorus, sulfur, potassium, calcium and magnesium; Carbon Sources: Organisms that use organic carbon for formation of new biomass are called heterotrophs; Organisms that derive cell carbon from carbon dioxide are called autotrophs

In this way, serious accidents can occur: the dams are only built to withstand a certain amount of water pressure; with the pressure from the sediment in some time the wall either explodes or water is caused to go above the dam, creating a waterfall; in both cases, a lot of organisms, including humans are in great danger. Dams are created in order to change the currents