Using points and the examples from the talk, explain two ways of preventing food spoilage and why they are effective.

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Using points and the examples from the talk, explain two ways of preventing food spoilage and why they are effective.

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2019-02-01 toppoki Check this speaking
2018-11-02 daryash72 66.00 Check this speaking
2019-10-28 bishoy 96.67 Check this speaking
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