Question

of the gases listed, which one is formed by the decomposition of living things? ozone argon helium methane

Explanation:

Living - things contain organic matter. During decomposition by bacteria in anaerobic conditions, methane is produced. Ozone is formed from oxygen in the atmosphere through photochemical reactions. Argon and helium are noble gases and are not formed from the decomposition of living - things.

Answer:

D. methane