What is the use of keeping food in air tight containers?

Which of the following should kept in air tight containers ?

What are the sources of their food ?

Why food materials are packed in air tight containers ?

What are the levels in food chain?

What are the uses of preservations of food?

What are the dangerous effects of inhaling air containing carbon monoxide?

Assertion (A): Plaster of Paris should be stored in tight containers. Reason : Plaster of Paris + Water to Gypsum

What is food web?

What is the role of different parts of the mouth in helping us to taste keeping sugar crystals over the tongue?

Which salt is used in cooking of food items?