Glossary of "Environmental Science: Earth as a Living Planet (2nd ed.)" by Botkin & Keller (1998)
- A factor considering the summation of all environmental features of a location that influences the placement of a city. For example, New Orleans is built on low-lying muds, which form a poor site, while New York City’s Manhattan is built on an island of strong bedrock, an excellent site.
- Botkin, D. B. & Keller, E. A. 1998. Environmental Science: Earth as a Living Planet, 2nd ed. -xxxxii + 649 pp. John Wiley & Sons, Inc., New York.