The passport card can be used at U.S. land and sea ports of entry when arriving from Canada, Mexico, the Caribbean and Bermuda. The card may not be used to travel by air.
A refrigerator maintains a temperature a few degrees above the freezing point of water. Optimum temperature range for perishable food storage is 3 to 5 Â°C (37 to 41 Â°F).emperature settings for refrigerator and freezer compartments are often given arbitrary numbers by manufacturers (for example, 1 through 9, warmest to coldest), but generally 3 to 5 Â°C (37 to 41 Â°F) is ideal for the refrigerator compartment and â18 Â°C (0 Â°F) for the freezer.
According to Keeping Food Fresh by Janet Bailey: Some foods need temperatures warmer than your refrigerator but cooler than your pantry. Fresh potatoes and winter squash for example keep best at a temperature of around 50Â°F. to 55Â°F.t's also a requirement for freezers in restaurants, supermarkets & other places that sell food (at least here in Europe) to maintain a temperature of at most -18 Â°C. A general purpose domestic fridge should be at around 1-4 Â°C (so, just above the freezing point, and below 5 Â°C).