Question

Who was the first life on the

Answer 1

Stromatolites, like those found in the World Heritage Area of Shark Bay, Western Australia, may contain cyanobacteria, which were most likely Earth's first photosynthetic organisms.Credit: Rob Bayer/Shutterstock

The earliest evidence for life on Earth arises among the oldest rocks still preserved on the planet.

Earth is about 4.5 billion years old, but the oldest rocks still in existence date back to just 4 billion years ago. Not long after that rock record begins, tantalizing evidence of life emerges: A set of filament-like fossils from Australia, reported in the journal Astrobiology in 2013, may be the remains of a microbial mat that might have been extracting energy from sunlight some 3.5 billion years ago. Another contender for world's oldest life is a set of rocks in Greenland that may hold the fossils of 3.7-billion-year-old colonies of cyanobacteria, which form layered structures called stromatolites.

Some scientists have claimed to see evidence of life in 3.8-billion-year-old rocks from Akilia Island, Greenland. The researchers first reported in 1996 in the journal Nature that isotopes (forms of an element with different numbers of neutrons) in those rocks might indicate ancient metabolic activity by some mystery microbe. Those findings have been hotly debated ever since — as, in fact, have all claims of early life.

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Answer 2

on the what if on earth
then they were Adam and Eve