Which of the following is non-biodegradable?
Answer & Solution
Correct answer: A.
1. Microbial enzymes cannot break down plastic polymer chains.
2. Polythene persists in the environment for decades.
3. Rice, leaves and dung are organic and biodegradable.
_Source: NCERT Class 10 Science, Ch 13 "Our Environment", §13.2.2_
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