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It is believed that the Prokaryotes or Bacteria are the oldest form of life (in the evolutionary cycle).

At some early point they would have evolved a renewable energy cycle. Cyanobacteria and a few other types of bacteria are able to carry out photosynthesis.

The longest living and thus oldest living organisms are the trees. The Bristlecone Pine trees in California/Nevada are thought to hold the current record of 4,800 years, although there are several ancient trees around the world.

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14y ago

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