Model of the Birth and Evolution of Photosynthetic Organisms (IMAGE)
Caption
Photosynthetic bacteria that were born in the deep sea hydrothermal vents have since evolved into algae, land plants. They were born for the first time on the Earth, it is thought that hydrogen sulfide (H2S) was used instead of water (H2O) as the electron source, that was their one or only one energy source.
Credit
Tokyo Institute of Techonology
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