[Answer] How long ago do scientists believe life first began on Earth?

Answer: 3.7 billion years

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How long ago do scientists believe life first began on Earth? The earliest undisputed evidence of life on Earth dates at least from 3.5 billion years ago during the Eoarchean Era after a geological crust started to solidify following the earlier molten Hadean Eon. There are microbial mat fossils such as stromatolites … The age of the Earth is 4.54 Gy (billion year); the earliest undisputed evidence of life on Earth dates from at least 3.5 Gya (Gy ago) and possibly as early as the Eoarchean Era (3.6–4.0 Gya). In 2017 scientists found possible evidence of early life on land in 3.48 … History of Earth - Wikipedia History of Earth - Wikipedia History of Earth - Wikipedia Abiogenesis - Wikipedia Most experts agree that all life today evolved by common descent from a single primitive lifeform. It is not known how this early life form evolved but scientists think it was a natural process which happened about 3 900 million years ago . This is in accord with … Primordial soup or prebiotic soup (also sometimes referred as prebiotic broth) is the hypothetical...

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