R. Harmon's Earth 101 Message Board

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Pastimes : R. Harmon's Earth 101

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To: .Trev who wrote (137)	4/22/2000 2:37:00 AM
From: Lilian Debray	Read Replies (1) of 183

Have you ever looked at the patterns made by soil microbes eating their way through a colour film? Bacteria remove the oxygen from the sulfates (SO4) just as they do in seawater when they have no other source of oxygen. They use it to oxidize their food, in this case natural gas (CH4). The sulfur is reduced to H2S (hydrogen sulfide). Sulfur is of course an environmental, economic and political concern cnn.com Microorganisms eat metal too. The rusticles on the Titanic are melting her thick steel plates into rust. The microbes have consumed as much of 20 percent of the Titanic's bow. Thousands of bacteria-produced, reddish-brown stalactites of rust hang down as much as several feet like icicles. The process started right after the sinking of the ship. "As the dust clouds settled and the final ejected debris came to rest, the rebirth of the Titanic began. Within hours nature initiated the reclamation of humanity's symbol of dominance over nature. The ubiquitous microflora of the oceans arrived to join the microbes that were already aboard - and still very much alive. Bacteria have far more resilience to pressure changes than other living organisms." meena.cc.uregina.ca

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