Science
Ancient microbial life used arsenic to thrive in a world without oxygen – Aviation Analysis Wing
Billions of years ago, life on Earth was mostly just sticky mats of great microbes living in shallow water. Sometimes these microbial communities made
Billions of years ago, life on Earth was mostly just sticky mats of great microbes living in shallow water. Sometimes these microbial communities made carbonate minerals that were encrusted together over many years to become layered limestone rocks called stromatolites. They are the oldest evidence of life on Earth. But the fossils do not tell researchers the details of how they formed.
Today, most of life is supplemented with oxygen. But these microbial mats were in place for a billion years b…
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