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Feelings of being on edge or restlessness * Heredity - Everyone receives genes from other parents and grandparents. Almost everyone that has an anxiety disorder carries a parent, grandparent, or other relative with anxiety syndromes of some type. In cases where the little one becomes separated from your parent from a young age, certain characteristics will surface which are like those of the parent. This indicates that the disorders aren't solely determined by life experiences as some have though. Clinical studies substantiate the pass-down-system of hysteria. Food preservation involves treating and handling food with the idea to greatly slow or stop spoilage that caused or accelerated by micro-organisms. Preservation normally involves preventing the development of fungi, bacteria along with other micro-organisms, along with the oxidation of fats which the cause rancidity. However, many ways of preservation actually use benign fungi, yeasts or bacteria to preserve food and add specific qualities, by way of example wines or cheeses. It may also include processes which inhibit aging and discoloration that occur during cooking, much like the enzymatic browning (oxidation) in apples when they are cut. Some food has to be sealed after treatment to avoid recontamination with microbes while others, including drying, mean food can be stored without special containment. There are many methods of preserving food including freezing, freeze drying, spray drying, food irradiation, sugar crystallization, adding preservatives, preserving in syrup, canning an d vacuum-packing.