Gastrin stimulates the secretion of HCL (Hydrochloric Acid)
saliva moistens your food and it begins to break down starchy foods.
The stomach uses the enzymes to break down foods.
They give off enzymes that break down complex foods. (novanet)
Hajmola
Foods don't break down fats. A negative calorie balance does. Consume fewer calories than you expend by eating right and exercising regularly.
Yes. it digests foods very efficiently.
yes it does through out your body
Fats in foods break down into fatty acids and glycerols.
converted to body heat
The liver produces bile to break down fatty foods.
gastrin
Yes, they will break down and biodegrade like other foods.