Question

what is boiling canning
freezing and dehydration

Answer 1

Boiling is the process of conversion of liquid into gas by increasing temperature of water

Canning is a method of preserving food in which the food contents are processed and sealed in an airtight container.

Freezing is process of conversion of liquid into ice by decrease in temperature

Dehydration is the significant lose of fluid in our body

Answer 2

Freezing ; Freezing is a quick and convenient way to extend the storage time of many foods. The quality of frozen foods will vary depending on how they are prepared for freezing, on packaging materials and storage time. Some foods do not freeze well. These links will help you successfully freeze foods for future use.Canning; preserve (food) in a can or the act, process, or business of preserving cooked food by sealing in cans or jars.drying ; Drying is one of the oldest methods for preserving foods. Dried foods need little space for storage. Some dried foods, such as fruit leathers, are eaten as is; others must be rehydrated for use. Follow these directions carefully for preparation and storage, for the best quality of dried foods.boiling ; Boiling is the process of applying heat to water until the temperature reaches about 100°C. Boiling foods in water cannot completely destroy all microorganisms, but the vegetative cells of bacteria, yeasts and moulds are generally quickly destroyed at temperatures of 100°C or above.