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Not exactly. Microfossils and chemical traces of life were present at least by 2.7 billion years ago. It
is said, with good supporting evidence, that the first organisms on Earth were probably single-celled prokaryotes that were probably genetically similar to the organisms belonging to the domain Archaea. These are prokaryotic microorganisms are genetically distinct from bacteria and often found living in habitats with extreme environmental conditions such as high temperature or salinity (salty). Life was first in the oceans and seas before being found on land.

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Wiki User

7y ago
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Wiki User

13y ago

Well there is a theory out there that says the frist living organism was a Bacteria,and that through evolution it became all the living organiams today. But there is no solid prof.

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Bacteria were the first life on Earth. They formed from a process of abiogenesis (Link) and evolved into all life presently on earth.

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KUSH SHILVANT

Lvl 2
3y ago

the most possible theory that bacteria made a complex life on earth some of the asteroids that crashed on the earths surface. this theory is proven by scientists that so me of the asteroids that crashed on earth had some bacteria that spread to make the earth habitable

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Wiki User

11y ago

By evolving rapidly into multi-celled organisms .

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Anonymous

Lvl 1
3y ago

I don’t know

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Q: Was the earliest organisms on earth bacteria?
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