Question

question 15 2 pts ______ convert co2 and h2 into methane gas. options: halophiles, thermophiles, methanogens, halogens.

Explanation:

• Halophiles: Organisms that thrive in high - salt environments, not related to converting CO₂ and H₂ to methane.
• Thermophiles: Organisms that live in high - temperature environments, their main characteristic is heat tolerance, not methane production from CO₂ and H₂.
• Methanogens: These are microorganisms that can produce methane. The reaction of converting CO₂ and H₂ into methane gas is a key metabolic process of methanogens.
• Halogens: These are a group of elements (like fluorine, chlorine, etc.) in the periodic table, not organisms capable of such a conversion.

Answer:

C. methanogens