Answer:
The organism is anaerobic bacteria.
Step-by-step explanation:
Bacteria is a prokaryotic microorganism that have different shapes and can inhabit in different habitat regions.
Bacteria is an important factor in the ecosystem as they have some unique features like they can capable of recycling vitamin B₁₂ and provide it through the food chain.
It play a vital role in nitrogen cycle as they helps to fix nitrogen in the ecosystem which is obtianed by plants and animals for their growth and development.
Methanogenesis is a process of formation of methane in the environment by some microbes like anaerobic bacteria through the process of anaerobic respiration.