Soil

Overview Video: Soil Stories: https://www.youtube.com/watch?v=Ego6LI-IjbY

How does water move through soil? http://www.youtube.com/watch?v=vmo0FRAVgkM

Porosity and Permeability:  http://www.geologycafe.com/images/porosity.jpg
                                        http://homepage.usask.ca/~mjr347/prog/geoe118/geoe118.024.html

How to determine the type of soil your from percentages of sand, silt, and clay: http://courses.soil.ncsu.edu/resources/physics/texture/soiltexture.swf


Agriculture and Soils:
Nutrients:







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