Minik rosing and robert frei have argued that life likely existed as far back as 3.7 billion years ago. they base this claim on:________

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Minik rosing and robert frei have argued that life likely existed as far back as 3.7 billion years ago. they base this claim on:________

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anamta123ahmed anamta123ahmed · Answer 1 · 2022-08-28T13:19:31+02:00

Minik rosing and Robert Frei have argued that life likely existed as far back as 3.7 billion years ago. They base this claim on the presence of biomarkers in rocks of that age.

“Biomarkers” or “chemical fossils” are herbal compounds with a particular carbon skeleton that can be associated with a stated biological precursor. Some biomarkers are synthesized by way of the usage of a confined extensive kind of organisms at the same time as others are extensively allocated.

These biomarkers encode information about historic biodiversity, meal chain institutions, and environmental situations. They're recorders of detail biking, sediment and water chemistry, oxidation-reduction conditions, and temperature histories.

There are three maximum vital kinds of biomarkers: biomarkers of exposure, effect, and susceptibility. A biomarker of publicity is an exogenous chemical or its metabolite(s), or the made from an interaction among a xenobiotic agent and some goal molecule or cell this is measured in a compartment inside an organism.

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