choose the correct answer. when living things digest food, they produce a gas that is also found in the…

choose the correct answer. when living things digest food, they produce a gas that is also found in the atmosphere. which gas is produced? mercury methane
Answer
Brief Explanations:
Living things produce methane during digestion. Methane is a gas. Mercury is a liquid metal at room - temperature and not a gas produced during digestion.
Answer:
B. methane