What percent of potassium-40 remains undecayed in a rock that is 3.9 billion years old? The 3.9 billion year old rock has undergone three half-lives (3.9 divided by 1.3 = 3). After 3 half-lives, 12.5% of the potassium-40 remains undecayed.
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On early earth, the one that was referred to as "Primordial Soup" is : B. The combination of organic compounds in warm salty water
Many speculated that these organic compounds mutated and evolved into a single cell organism, which became the origin of the organisms on earth
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Answer:
B
Explanation:
halophiles are classified into the Archaea domain, there are also bacterial halophiles and some eukaryota
