Do we know what type of organism first started life on Earth?

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SUMMARY

The discussion centers on identifying the first type of organism that initiated life on Earth, with a focus on the roles of algae, archaea, and the PAH and RNA world hypotheses. Participants highlight that archaea are considered among the earliest life forms, thriving in extreme environments. Algae are also mentioned as significant early organisms following volcanic activity and the onset of rainfall. The conversation emphasizes the importance of understanding these primitive life forms in the context of evolutionary biology.

PREREQUISITES
  • Basic understanding of evolutionary biology
  • Familiarity with extremophiles, particularly archaea
  • Knowledge of the PAH world hypothesis
  • Understanding of the RNA world hypothesis
NEXT STEPS
  • Research the characteristics and significance of archaea in early Earth conditions
  • Explore the PAH world hypothesis and its implications for the origin of life
  • Investigate the RNA world hypothesis and its role in the development of early life forms
  • Study the evolutionary timeline of algae and their environmental impact
USEFUL FOR

This discussion is beneficial for evolutionary biologists, researchers in astrobiology, and anyone interested in the origins of life on Earth.

nukeman
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I am not sure on this, so hope someone can shed some light on this.

What type of organism was thought to be among the first on earth? I am not sure if this is the right way to ask this :)

Lets say if I wanted to see, or do tests on an organism, and my tests were related to doing tests on the first organism on earth, or the first life on earth, what would it be?

For some reason I thought algee was among the first on Earth after the heavy volcanic period, and when it started to first rain.

Thanks guys!
 
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