Q6 of 50 Page 475

Pick the non-biodegradable, substances from the following:

Animal bones, wool, paper, glass.

Non-biodegradable substances are those which cannot be breakdown or degraded by microorganisms such as bacteria and fungi. Glass is no-biodegradable substance in above given substances.


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Pick the biodegradable substances from the following:

Cotton, rubber, leather, radioactive material.

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Give the full form of CFC.