Answers

2015-12-27T15:42:32+05:30
The exact time for degradation is still unknown but the subtances like glasses takes hundreds of years whereas plastics are expected to be decomposed uptill 1000 years.
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2015-12-27T16:37:50+05:30
Non biodegradable substances are those that cannot be broken down by biological processes..
It takes many years for decomposition.
For ex:- Plastics which are said to be non- biodegradable takes more than 50,000 years to decompose... It is harmful for our environment..
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