A hot one
bacteria copy or reproduce them selves by keeping warm, moist, and have plenty of 'food' to feed on.
prevent animals from moving around too much and keeping their surroundings warm
A plate warmer is used to keep plates warm, thus keeping food warm. Plates usually don't stay warm, so having a plate warmer keeps plates and food warmer for longer.
Keeping warm is not a change - of any sort.
Keeping warm during the daytime, and when he realized that he could grow plants for food instead of constantly searching for plant food.
It simply means that the food in the middle of the rest of the food will be the hottest as the food on the outside is keeping it warm as the outside cools down.I hope this answer has been of much use.
It depends on the food you want to keep warm. As with all food keeping it warm will eventually affect the quality of the food. Vegetables, meats and the like can be kept warm for many hours without spoiling. You need to keep a watch on food, as it may dry out or get sodden and go mushy. Keep foods covered to help with moisture retention of meats and to prevent the leeching of juiceds onto other foods. All food should be kept at 63C/145F to prevent bacteria growth in food whilst keeping it warm.
Koalas have no problems keeping warm. Their fur is specially insulated to keep them warm in cold weather, and cool in hot weather.
Foil itself will not warm it, it has to already be warm for it to insulate it.
they are keeping themselves warm from the food that they store. They are also burning calories, I think. You should probably check with A specialist.
For keeping it warm