input question: What is the final step of the following process: - The blood sugar drops in a body - Cells in the pancrease release glucagon - The liver in response turns the glucagon into glucose - And releases it into the blood???
output answer: The blood sugar levels are restored.

What is the final step of the following process: - There is a fetus in the womb - They are born and are a baby - The baby grows into a child - Puberty turns the child into an adolescent - The adolescent becomes an adult - An adult becomes an elderly person
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Answer: The elderly person dies.

Q: What is the final step of the following process: - Coal is mined out of the ground - Coal is pulverized into fine powder - The coal is mixed with hot air - The coal and hot air are blown into a boiler - The coal and hot air burn over a fire - Highly purified water is pumped through pipes in the boiler - The water turns into steam - The steam presses against turbines - The turbines spin
A: Electricity is produced.

Question: What is the final step of the following process: - Air enters the nose or mouth and travels through the windpipe into the lungs - The lungs have a series of smaller and finer tubes and sacs - Air reaches the smallest and finest air sacs called alveoli - Oxygen travels from the alveoli into the blood - Oxygen-rich blood is carried to the heart - Oxygen-rich blood is pumped throughout the body by the heart - Cells take in the oxygen rich blood and release carbon dioxide rich blood - The carbon dioxide rich blood travels to the lungs
Answer: Carbon dioxide travels through the throat and is exhaled.

[Q]: What is the final step of the following process: - Coal is burned - Sulfur in the coal combines with oxygen to form sulfur oxides - The sulfur oxides are released into the atmosphere - The sulfides combine with oxygen in the atmosphere to form sulfur trioxide - The sulfur trioxide reacts with water in the atmosphere to form sulfuric acid, a very strong acid
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[A]: The sulfuric acid makes the rain acidic

Problem: Given the question: What is the final step of the following process: - A person breathes in oxygen - The oxygen passes through the bronchial tubes to the lungs - The oxygen is moved into the bloodstream - Circulates through the body - The cells in the body exchange the oxygen with carbon dioxide - The bloodstream carries the carbon dioxide back to the lungs
++++++++++++++++++++++++++++++++
The answer is:
The lungs expel the carbon dioxide through the nose and mouth.