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Re: 2nd Law of Thermodynamics
Martin Jehle wrote:
> These bacteria, tube worms etc. on the ocean bottom are powered by heat from
> the earth ?
> Great, but please tell me, how exactly does this work ?
The deep-sea vent ecosystems are a recent discovery, and biologists are
still figuring out the details about how they work. The basics are
pretty clear, though. Each such ecosystem forms around a volcanic
mineral-water spring in the ocean floor. The springs eject mineral-rich
water at extremely high temperature. Thermophilic bacteria take in
sulfur and other minerals, and use them to grow through a process called
chemosynthesis -- chemical synthesis of food-energy. Then those
bacteria become the base of the local food chain.