Since the landsurface is located at the interface of the Earth's lithosphere, atmosphere, hydrosphere and biosphere, geomorphology is closely related to a wide range of other disciplines (Table 1.1). While having a central interest in landforms, geomorphologists must, none the less, be aware of those aspects of allied disciplines that bear on their subject. Equally, geomorphology has a potential, as yet only partially realized, of making significant contributions to these other areas of knowledge.