1. An investigation on using Human urine as a Fertilizer
http://www.sciencebuddies.org/science-fair-projects/project_ideas/PlantBio_p046.shtml
2. An investigation on whether people can accurately determine if a smile is genuine or fake.
http://www.sciencebuddies.org/science-fair-projects/project_ideas/HumBeh_p043.shtml#summary
3. An investigation on water plants determining the water quality
http://www.sciencebuddies.org/science-fair-projects/project_ideas/PlantBio_p030.shtml
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