In the following groups of materials, which group/groups contain only non-biodegradable materials ?

(i) wood, paper, leather


(ii) polythene, detergent, PVC


(iii) plastic, detergent, grass


(iv) plastic, Bakelite, DDT

Polythene, detergent, PVC, Plastic, Bakelite and DDT are non-biodegradable materials i.e. they cannot be degraded.

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