A refrigerator is used for keeping food fresh for a long period of time.
Cold temperatures keep food fresh and inhibit the growth of most bacteria.
A refrigerator is used for inhibiting the growth of most bacteria on food.
A refrigerator is used for inhibiting the growth of what on food?

  some invertebrates
  viruses
  molds
  spores
  Echinoids
  most bacteria
  Nematoda
  cones