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10 Cards in this Set
- Front
- Back
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It is hypothosized that all life can be traced back to primeval _____________ that lived 3.5 to 3.9 billion years ago. |
prokaryotes |
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Oldest eukaryotic fossil is... |
...2.1 billion years ago. |
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Oldest fossil is.... |
...stromatolites (3.5 billion years ago) |
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O2 accumulated in the atmosphere... |
...2.7 billion years ago. |
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When was the explosion of animal diversity? |
542 million years ago (Paleozoic era) |
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Plants, fungi and animals colonized land... |
...500 million years ago
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What is the current theory of the origin of life? |
All life on earth came from pre-existing life |
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Define biogenesis |
Life from all life |
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What experiment is Pasteur renown for? |
His swan neck experiment that proved that spontaneous life does not exist. |
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What is the accepted theory on the first origins of life? |
The first organisms on Earth originated from abiotic factors by chemical evolution. |
