What is the difference between polyethylene and polypropylene in terms of their aspects which are harmful to the environment during manufacture and disposal.
closed as primarily opinion-based by Karl, Mithoron, Jon Custer, Todd Minehardt, airhuff May 17 at 3:25
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Every material is terrible if not properly collected and processed after use.
Wether you re-use it (like glass bottles), or recycle the material, or burn it to make electricity and district heating, is small potatoes.
What material you use is also not very important, only the actual energy and environmental costs of "bio"materials like paper or cotton are very high. You have to re-use them very often before they make sense!