REFERENCES

• Beer, M., Duff, M., Christopherson, A., & Bingham. (2001). The Affect of Wavelengths of Light on Rate of Photosynthesis. Retrieved May 27, 2016, from http://spot.colorado.edu/~basey/beer.htm

• Nazarian, R., & Murie, S. (2003, August 8). Does Leaf Color Affect the Rate of Photosynthesis. Retrieved May 26, 2016, from http://spot.colorado.edu/~basey/col.htm

• Ruhr-Universitaet-Bochum. (2014, August 20). A semi-artificial leaf faster than 'natural' photosynthesis. Retrieved May 27, 2016, from https://www.sciencedaily.com/releases/2014/08/140820091607.htm

• Savonen, C. (2003, February 19). Colored leaves have chlorophyll too. Retrieved May 26, 2016, from http://extension.oregonstate.edu/gardening/colored-leaves-have-chlorophyll-too

• Umeå University. (2015, December 7). Increased CO2 concentrations in the atmosphere have altered photosynthesis of plants over the 20th century. Retrieved May 27, 2016, from https://www.sciencedaily.com/releases/2015/12/151207164333.htm

University of Gothenburg. (2015, June 12). Increased carbon dioxide levels in air restrict plants' ability to absorb nutrients. Retrieved May 27, 2016, from https://www.sciencedaily.com/releases/2015/06/150612104016.htm