Answers

2015-06-27T18:57:31+05:30
Plastics are made of petroleum.
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2015-06-28T06:53:11+05:30
Plastics are made up of very small units of strong bonds. These bonds don't easily break in nature and hence don't decompose or degrade into simpler units in the environment. Hence plastics are called nonbiodegradable. 
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