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In the ocean, there are places where it looks like it is snowing. These magical places are near undersea volcanic activity. The snow particles are clumps of bacteria that use chemicals to make food. Chemicals they use include hydrogen sulfide, which is toxic to virtually all other life. Most other ecosystems on earth depend on organisms that require sunlight to create food. Vents release hot water, minerals, and chemicals from beneath hardened lava. The fluid is almost 30 degrees F warmer than the surroundi
