Physical Geography is the holistic study of the Earth's natural sytems and cycles. It includes the study of the interrelationships among landforms, soil, vegetation, water (the oceans), and the climate.
An introduction to topics in physical geography including: geomorphology, meteorology, biogeography and hydrology. www.geog.ouc.bc.ca/physgeog/home.html
A comprehensive directory of information about Earth science data, including a broad coverage of the oceans, atmosphere, hydrosphere, solid earth, biosphere and human dimensions of global change. gcmd.gsfc.nasa.gov
The U.S. Geological Survey's Global Change Research Program is an international source for ground-based and remotely sensed earth science data and information used by global change researchers and contributing to assessments of the potential effects of gl geochange.er.usgs.gov
Website of the Geological Survey Bureau of the Iowa Department of Natural Resources, including a Geologic Sample Database (GEOSAM)with geologic information for 35,000 locations in Iowa. www.igsb.uiowa.edu