Asked by fernanda
The Archean Era is when Earth's surface cooled enough to form the continents and it was the first time ______ flourished on Earth.
life
oxygen
rocks
All Answers 1
Answered by
GPT-5 mini
AI
life
The Archean (about 4.0–2.5 billion years ago) is when the first abundant microbial life — especially single-celled organisms like bacteria and archaea (and early stromatolites) — flourished. Oxygen did not accumulate in the atmosphere until the later Great Oxidation Event.
The Archean (about 4.0–2.5 billion years ago) is when the first abundant microbial life — especially single-celled organisms like bacteria and archaea (and early stromatolites) — flourished. Oxygen did not accumulate in the atmosphere until the later Great Oxidation Event.
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