Unknown, since it left no trace of itself.
Possibly (even probably) it was a sort of pseudo-cell consisting of only proteins ...
which must have been self-replicating.
Probably bacteria -they're the simplest form of life.
horn corals
The biosphere is defined as the living organisms on earth. As such, it began to evolve when the first organisms appeared. Currently, this is believed to have happened about 3.5 billion years ago.
blue green algae archebacteria
This topic is debated but here is the most likely cause: Those organisms reproduced and created more organisms. Over time the organisms changed (due to the Earth changing). The organisms reproduced with other organisms and created a new species. After millions of years, creatures like wolves and humans now exist. Hope I helped
1.4 billion years ago
Eubacteria is apart of the Monera group that appeared about 3. 8 billion years ago. They are some of the oldest organisms on the Earth and have evolved in the way that they obtain food.
Earth's first organisms were the Single- Celled organismsBacteriaFungiAnd Protozoa
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The first organisms on Earth were likely simple single-celled prokaryotes, such as bacteria and archaea, that appeared around 3.5 billion years ago. These early organisms were anaerobic, meaning they did not require oxygen to survive. These primitive life forms eventually evolved into more complex organisms over millions of years.
Multicellular organisms first appeared during the Vendian period.
Who appeared on the earth first
The first living things on Earth, single-celled micro-organisms lacking a cell nucleus or cell membrane and known as prokaryotes first appeared on Earth almost four billion years ago.
The biosphere is defined as the living organisms on earth. As such, it began to evolve when the first organisms appeared. Currently, this is believed to have happened about 3.5 billion years ago.
2 billion years ago ... You Plato user huh....
Bacteria.
Protists
blue green algae archebacteria
Bacteria.