variation. divergence among individual animals of a group. The differences in the morphology or function of an organ or organism, are small enough to stay within the variability of the type organism or organ.
According to the Food and Drug Administration, your fridge should be set at or below 40 F (4 C). Your freezer should be set at 0 F (-18 C). Food stored in the freezer at 0 F will remain safe indefinitely, although the quality will decrease the longer the food is in the freezer. Freezing does not change a food's nutritional value.
Answer: You should keep your freezer temperature at or below 0Â° F, says the U.S. Food and Drug Administration. At that freezer temperature, the growth of harmful bacteria will be halted â indeed, foods that are kept constantly frozen at 0Â°F or lower will keep safe indefinitely, notes the FDA. The best way to find out whether your freezer is cold enough is to use a freezer thermometer. You can find inexpensive models at most grocery and hardware stores.