Chemical potential energy. Potential energy being converted into kinetic energy. A lump of coal and a can of gasoline
The salivary glands, liver and gall bladder, and the pancreas aid the processes of ingestion, digestion, and absorption. These accessory organs of digestion play key roles in the digestive process. Each of these organs either secretes or stores substances that pass through ducts into the alimentary canal. Credits: internet source
Because if they run out they will take a long time to remake themselves
Believe it or not you share 100% genes with your mother.
Now you may act or look more like your dad but you still share her genes.
