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[3] "Table 1-11: Number of U.S. Aircraft, Vehicles, Vessels, and Other Conveyances | Bureau of Transportation Statistics." Table 1-11: Number of U.S. Aircraft, Vehicles, Vessels, and Other Conveyances | Bureau of Transportation Statistics. N.p., n.d. Web. 14 Apr. 2014. <http://www.rita.dot.gov/bts/sites/rita.dot.gov.bts/files/publications/national_transportation_statistics/html/table_01_11.html>.
[3] "Table 1-11: Number of U.S. Aircraft, Vehicles, Vessels, and Other Conveyances | Bureau of Transportation Statistics." Table 1-11: Number of U.S. Aircraft, Vehicles, Vessels, and Other Conveyances | Bureau of Transportation Statistics. N.p., n.d. Web. 14 Apr. 2014. <http://www.rita.dot.gov/bts/sites/rita.dot.gov.bts/files/publications/national_transportation_statistics/html/table_01_11.html>.
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Figure 1.
<http://www.betterlivingthroughdesign.com/wp-content/themes/bltd/lib/timthumb.php?src=http://www.betterlivingthroughdesign.com/images/glass-greenhouse.jpg&h=&w=513&zc=1>
Figure 2.
“Best Cars.” USNews. N.p., n.d. Web. 14 Apr 2014. <http://usnews.rankingsandreviews.com/cars-trucks/Jeep_Wrangler/2013/specs/Wrangler-4WD-4dr-Sport-353130/>.
Figure 3. “Vines.” N.p., n.d. Web. 15 Apr 2014. <http://www.nps.gov/plants/alien/pubs/midatlantic/hehe.htm>.
[8] “Measuring the rate of photosynthesis.” Science & Plants for Schools. N.p., n.d. Web. 14 Apr 2014.
Figure 4. “Evapotranspiration-The Water Cycle.” USGS. N.p., n.d. Web. 15 Apr 2014. <http://water.usgs.gov/edu/watercycleevapotranspiration.html>.
[9] Sikora, Edward. “Air Pollution Damage to Plants.” Alabama A&M and Auburn Universities. N.p., n.d. Web. 15 Apr 2014. <http://www.aces.edu/pubs/docs/A/ANR-0913/ANR-0913.pdf>.
[10] “Planning and Building a Greenhouse.” West Virginia University. N.p., n.d. Web. 15 Apr. 2014.
<http://www.wvu.edu/~agexten/hortcult/greenhou/building.htm>.
[11] "Carbon Dioxide Emissions." EPA. Environmental Protection Agency, n.d. Web. 14 Apr. 2014. <http://www.epa.gov/climatechange/ghgemissions/gases/co2.html>.
