Food that is stored uncovered can be a safety hazard because it can be contaminated by various organisms.
It is very important to cover food properly while storing it because there are lots of living things e.g housefly, mosquitoes, ants harbor microorganisms that contaminate the foods and deposit different bacteria in the food.
When storing food in the refrigerator or cupboards it is important to put them in an airtight container to avoid contamination by microorganisms.
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