It was in the primitive oceans that life began almost ___________ billion years back.A 1 B 3.5 C 2.5 D 6
Question
It was in the primitive oceans that life began almost ___________ billion years back.
A. 1
B. 3.5
C. 2.5
D. 6
Solution
The correct answer to the question about when life began in the primitive oceans is option C: 2.5 billion years back.
This timeframe corresponds to when the first simple life forms, such as prokaryotes, emerged. More complex life forms appeared later, around 600 million years ago. The study of the Earth's geological history and the fossil record indicates that life started to develop significantly in the oceans approximately 2.5 billion years ago, during the Proterozoic eon, marking a crucial period in the evolution of life.
Thus, the most accurate answer based on scientific evidence is 2.5 billion years back.
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