Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.

Question: Gall bladder removal surgery does not seriously affect digestion because ______ is still being produced. Answer: bile
Note Surgical removal is often advised for a gallbladder that becomes infected, inflamed, or perforated. This surgery does not seriously affect digestion because bile is still produced.

Question: Biochemical compounds that include sugars, starches, and cellulose are examples of what? Answer: carbohydrates
Carbohydrates are biochemical compounds that include sugars, starches, and cellulose. They contain carbon, hydrogen, and oxygen, and they are used mainly for energy by living things.

Question: Metamorphic rocks form when an existing rock is changed by heat or what? Answer: pressure
Metamorphic rocks form when an existing rock is changed by heat or pressure. The minerals in the rock change but do not melt. The rock experiences these changes within the Earth.