Biodiversity - mid semester quiz questions: Analysis of air bubbles trapped in rocks shows a drop in the level of carbon-12 (relative to other isotopes) in rocks that are 3.8 - 3.7 billion years old when compared to rocks that are 3.9 - 4.0 billion years old. How is this possible?

Question

Analysis of air bubbles trapped in rocks shows a drop in the level of carbon-12 (relative to other isotopes) in rocks that are 3.8 - 3.7 billion years old when compared to rocks that are 3.9 - 4.0 billion years old. How is this possible?

Angela Hill · Accepted Answer

Living organisms that appeared approximately 3.8 billion years ago preferentially use carbon-12.

Biodiversity - mid semester quiz questions

Analysis of air bubbles trapped in rocks shows a drop in the level of carbon-12 (relative to other isotopes) in rocks that are 3.8 - 3.7 billion years old when compared to rocks that are 3.9 - 4.0 billion years old. How is this possible?

Living organisms that appeared approximately 3.8 billion years ago preferentially use carbon-12.

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