Breathing room for early animals.
review · Level V
Where this comes from
- Record sourced from PubMed, PMID 11541136.
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Abstract
Did an increase in atomospheric oxygen concentration some time during the Neoproterozoic era 1,000 to 543 million years ago, make possible the diversification of multicelluar animals?
Medical subject headings
- Atmosphere
- Biological Evolution
- Hydrogen Sulfide
- Oxygen
- Sulfur-Reducing Bacteria