Picture(s) from: http://rosalienebacchus.wordpress.com/tag/earth-day-network-edn/
http://www.mass.gov/portal/images/energy-environment/200x225-energy-air-water-land.jpg
http://fc04.deviantart.net/fs70/i/2010/134/5/7/land_water_air_by_stingerblack.jpg
http://pragmaticobotsunite.com/wp-content/uploads/2013/01/66-underwater2.jpg
http://maers.state.mi.us/facility/Pages/Public/Client/MI/Images/MAERSloginPic.jpg
http://archive.ck12.org/ck12/images?id=309360
http://cimss.ssec.wisc.edu/sage/meteorology/lesson1/images/atmosphere&moon.jpg
http://www.greenprophet.com/wp-content/uploads/2012/04/climate-change-city-grass-land-earth-560x313.jpg
http://www.mass.gov/portal/images/energy-environment/200x225-energy-air-water-land.jpg
http://fc04.deviantart.net/fs70/i/2010/134/5/7/land_water_air_by_stingerblack.jpg
http://pragmaticobotsunite.com/wp-content/uploads/2013/01/66-underwater2.jpg
http://maers.state.mi.us/facility/Pages/Public/Client/MI/Images/MAERSloginPic.jpg
http://archive.ck12.org/ck12/images?id=309360
http://cimss.ssec.wisc.edu/sage/meteorology/lesson1/images/atmosphere&moon.jpg
http://www.greenprophet.com/wp-content/uploads/2012/04/climate-change-city-grass-land-earth-560x313.jpg