Printhttp://users.rcn.com/jkimball.ma.ultranet/BiologyPages/P/PlantGrowth.html
http://www.ext.colostate.edu/mg/gardennotes/141.html
http://en.wikipedia.org/wiki/Simulated_growth_of_plants
http://encyclopedia2.thefreedictionary.com/Plant+growth
http://www.phschool.com/science/biology_place/biocoach/plants/primary.html
8th grade
10th grade
11th grade
12th grade
