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How did photosynthesis evolve?


   How did photosynthesis evolve?


  leslieh
 4/3/09
 

 How did photosynthesis evolve?

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  swartzy
 4/3/09
 

 Photosynthesis evolved when the only life on Earth were microorganisms.

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  cyclotreker
 4/3/09
 

The first photosynthetic organisms probably appeared about 3500 million years ago.

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  epking
 4/3/09
 

 Cyanobacteria appeared about 3000 million years ago, and began to oxygenate the atmosphere.

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