Differentiate between biodegradable and non – biodegradable substances.

Q. (a) Differentiate between biodegradable and non-biodegradable substances.
(b) How is acid rain causing harm to ‘Taj Mahal’ ? 
(c) What is smog ?wie
Ans. (a) Biodegradable :
(i) Substances which can be decomposed by decomposers into useful products.
(ii) They do not cause pollution.
(iii) Example: Organic waste.
Non-biodegradable :
(i) They cannot be decomposed by the decomposers.
(ii) They cause huge pollution.
(iii) Example: Plastic.
(b) Acid rain is corroding the calcium carbonate of Taj Mahal and causing pits in the monument.
(c) It is a mixture of fog and smoke.

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