MCQ
Which of the following get completely decompose?
- ✓Left over food.
- BBroken glass.
- CAluminium wrapper.
- DPolythene bags.
Left-over food is a biodegradable substances. Biodegradable substances get decomposed by the action of decomposers like bacteria.
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$(i)$
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Physical state
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$(ii)$
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Density
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$(iii)$
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Size of constituents
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