Question

Which of the following conclusions are made on methane in natural environment?

• A. Methane is produced by methanogenesis in anoxic environment
• B. The concentration of methane is 0.1 to 1.0 $\mu M$ for surface waters of lake
• C. Methane produce in sediment bubbles and diffuses into the water column and is lost to the atmosphere, except during winter months
• D. All of the above

Answer 1

The correct option is D All of the above

Naturally occurring methane is mainly produced by the process of methanogenesis. This multistep process is used by microorganisms as an energy source. The net reaction is:

$C{O}_2+8H++8e^{-}\to C{H}_4+2H_{2}O$