Because if you don't your food will become spoiled and think about this if you put ice cream in the re fridge you ice cream would melt.
the plant dies because it needs food, and plant food comes from sunlight
To keep food cold that needs to be kept cold.
Food needs to be treated so that it can be stored or kept in a good condition for a long time.
Foods that are served from concession carts are safe to eat IF they are prepared in a sanitary manner. Make sure the server is wearing proper gloves, and their hair is secured. Be sure that hot food has been kept at correct temperatures and cold food has been kept at correct temperatures.
Hot food must be above the temperature of 135°F or above63°C. Hot holding temperatures may vary according to locality. Check with your local health authorities
it will die due to lack of oxygen ,food and water which are the basic needs of life
To prevent the rapid growth of bacteria in food, temperatures should be kept below 40°F (4°C) for refrigeration and above 140°F (60°C) for cooking and serving. Keeping food out of the "danger zone," which ranges from 40°F to 140°F, helps inhibit bacterial growth and ensures food safety. Proper storage and cooking temperatures are essential for preventing foodborne illnesses.
The food is kept in special frozen areas. This helps keeping the food from withering.
On most of the warmers out there today, there are settings that can control the temperature. By reading the manual, you can decide how warm your food needs to be kept and turn it to that.
ice
Yes, it is dangerous. Food should not be kept between temperatures of 40F and 140F (4C-60C) for more than one hour, as this is the temperature range in which bacteria multiply the fastest.
Quantity food production uses larger amounts of food and larger preparation cookware to cook the foods. Often, food cooked in quantity is kept at opimal temperatures in warmers until it is eaten or too much time has passed and it must be discarded.