Are plastics environmentally friendly

The reason plastic is bad for the Earth is that when plastic finds it's way into landfills, it takes much more time to return to its Earthly matter.

Also, try visiting a few of these websites to get more information, as I am not 100 percent sure of my own answer.

http://abcnews.go.com/Health/story?id=2138565&page=1

http://www.sciencedaily.com/releases/2008/01/080130092108.htm

Here is the best result I have found about why plastic bottles are harmful for our environment.

http://julesmay.Wordpress.com/2007/10/02/why-recycling-is-bad-for-the-environment/