2
$\begingroup$

How long does it take for the plastic/polythene shopping bags marked biodegradable to biodegrade?

$\endgroup$

closed as off-topic by BHF, Fred, Jan Doggen, arkaia, Peter Jansson Sep 22 '15 at 16:02

  • This question does not appear to be about earth science, within the scope defined in the help center.
If this question can be reworded to fit the rules in the help center, please edit the question.

  • $\begingroup$ Welcome to Earth Science Stack Exchange! I found one, two, three leads quite easily... Maybe you will have more specific questions after some research. $\endgroup$ – kwinkunks Sep 21 '15 at 14:58
  • $\begingroup$ Thanks @kwinkunks. But I have read these and other articles on the web and none gives a definitive answer (or any at all)! My own conclusion is that in nature biodegradable plastics/shopping-bags don't biodegrade at all! They only biodegrade in controlled, usually industrial, conditions. $\endgroup$ – Ali Khan Sep 21 '15 at 15:27
  • 4
    $\begingroup$ I'm voting to close this question as off-topic because it more suitable for sustainability.stackexchange.com. $\endgroup$ – BHF Sep 21 '15 at 20:31
  • $\begingroup$ @BHF I'm inclined to agree, but I can imagine more specific versions of this question that are about physical processes in/on the earth. If the OP cares to ask such a question... $\endgroup$ – kwinkunks Sep 21 '15 at 20:46
  • $\begingroup$ You will have to define biodegradable if you want answers based on facts, i.e. you can only expect a meaningful answer (also on sustainability.stackexchange.com) if you ask for a bag made of ..... $\endgroup$ – Jan Doggen Sep 22 '15 at 11:59