Question

when food particles are kept in polythene bags,they get contaminated.why?

Answer 1

Answer:

it may be because of insufficient of oxygen.

Answer 2

Answer:

there are many dangerous from plastic bags

Explanation:

plastics was not naturally producing element on the earth synthetic, they synthectically manufactured with a combination of chemical

when food in plastic bags this chemical can reach into the food and affect them. and the hot food made the polythene bags they get contaminaed

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