Respuesta :

Answer:Among the oldest methods of preservation are drying, refrigeration, and fermentation. Modern methods include canning, pasteurization, freezing, irradiation, and the addition of chemicals. Advances in packaging materials have played an important role in modern food preservation.

Explanation:

Answer:oldest and modern methods of food preservations are:

Explanation: oldest

1.drying 2.refrigeration 3.fermentation

Modern

1.canning 2.pasteurization

3.freezing 4.addition of chemicals