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Plastics are not broken down by bacteria because:

APlastics dissolve
BEnzymes are specific
CPlastics are metals
DBacteria avoid heat
Answer & Solution
Correct answer: B. Enzymes are specific
1. Each enzyme breaks down a particular substance. 2. No enzyme suits human-made plastics. 3. Plastics persist for a long time. _Source: syllabus Science, Chapter 15, Our Environment._
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