Question

describe the various ways of food preservation

Answer 1

Food preservation usually involves preventing the growth of bacteria, fungi (such as yeasts), or other micro-organisms (although some methods work by introducing benign bacteria or fungi to the food), as well as retarding the oxidation of fats that cause rancidity.

Answer 2

Hey mate!! food can be preserved in various ways like
By filling nitrogen into package foods
By using of refrigerator
May this will help u !!