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By following ways food can be presrved :-
1.by keeping food in closed & air thight containers
2.keeping food grade plastic utensils.
3.preserving food in refridgerator.
4.in pickles putting salt & oil in excess.
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by keeping them in refrigerators and keeping it away from sunlight
We can preserve food in many ways .some of them are:
(i)keeping the food in air tight vessels and containers,
(ii)packing the food in oxygen free bags,
(iii)by adding preservatives,
(iv)storing in oxygen free stores,etc.
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