Answer:
In contemporary society, there are many ways to preserve food:
Canning - which consists in adding salt and heating food inside a can
Freezing - which is simply the use of a refrigerator to cool or freeze the food
Drying - as the world implies, this is drying the food so that bacteria, which thrive in moist enviroments, do not grow
Salting - perhaps the oldest method of food preservation, simply consists in adding salt to the food in order to preserve it.
