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A piece of vegetable peel and a polythene bag are buried in soil for 6 months. What is observed?
Answer & Solution
Correct answer: B.
1. Microbes secrete enzymes that act on vegetable matter.
2. Polythene's long synthetic polymer chains resist these enzymes.
3. Hence the peel disappears while polythene persists.
_Source: NCERT Class 10 Science, Ch 13 "Our Environment", §13.2.2_
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