Disposable plastic plates should not be used because :
(a) they are made of light weight materials
(b) they are made of toxic materials
(c) they are made of biodegradable materials
(d) they are made of non-biodegradable materials
Correct answer: (d) they are made of non-biodegradable materials.
Explanation: Disposable plastic plates cannot be degraded by micro-organisms and hence should not be used as they will remain in the environment and pollute it.
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