Hemical Engineering: The advantages of recycling for the environment

I had already wrot the essay I just want someone to check it for me

Referencing Requirements:
Brennan,J.(n.d.). Benefits and Saving of Recycling Plastic. National Geographic. Retrived on
April 25, 2012 from benefits-savings recycling-plastic-3219.html
Le Page,M.(2011). Climate change: what we do know–and what we donat. New Scientist,
212(2835), 36-8. . Retrieved on May 16, 2012 from Academic Search Complete.
Leslie,C.(2011). A richer shade of green. Nation, 292(26), 22-23. Retrieved on April 25, 2012
From Academic Search Complete.
Vergara,W & Schols,S.(2010). Assessment of the risk of Amazon dieback[electronic version].
Wasgington: World Bank.