Why do living organisms store nutrients?

Living organisms store nutrients so that the embryo develops, receives the necessary vitamins and minerals. many animals store nutrients for wintering because hibernate, or do not find food for themselves every day. Hibernating animals lay down such an amount of fatty layer, which is enough for the entire wintering period. The rest of the animals for the summer and autumn periods are stocked with fat so that in times of famine they do not die of hunger.