In anaerobic conditions like deep ocean sediment, the bacter…

In anaerobic conditions like deep ocean sediment, the bacterium Desulfovibrio vulgaris is often found living together with archaea from the genus Methanospirillum. D. vulgaris can break down the carbon source formate for energy, but this produces H2, which inhibits growth of D. vulgaris. Methanospirillum archaea consume H2 in their main energy-producing metabolic pathway. Which of the following best describes this situation? Which of the following best describes this situation?

A huge variety of microbes live together in different parts…

A huge variety of microbes live together in different parts of the world’s oceans. The graph below represents microbial communities found in surface waters and deep sea waters of two different oceans, and on the ocean floor. The different colors represent different groups of microbes.   Which of the following best describes the Pacific surface community compared to the Pacific deep sea community?