​​How solar works [Print Photo]. Retrieved from http://suncowboy.com/images/HowSolarWorks.jpg

 

Soto, J. I. (Photographer). Wind turbines and solar panels on sunflowers field [Print Photo]. Retrieved from http://www.dreamstime.com/stock-image-wind-turbines-solar-panels-sunflowers-field-image11624151

 

 

Smart Managers Generate Electric Power from Solar Energy [Print Photo]. Retrieved from http://www.sunipod.com/blog/solar-energy-for-electric-power/

 

Sustainable structure designed to produce renewable energy [Print Photo]. Retrieved from http://www.ecofriend.com/solar-energy-field-renewable-energy-producing-structure-for-deserts.html

 

 

The life cycle of biofuels [Print Photo]. Retrieved from http://www.extension.org/sites/default/files/w/2/22/BiofuelLifeCycle.jpg