Yes. Oxygen crash led to Cambrian mass extinction
Species with more likely homologous structures share a common ancestor.
- D. share a common ancestor.
<h3>What are example homologous structures?</h3>
The most correct definition for homology would be: They are structures of individuals, of different species or not, that were inherited from a common ancestor. The human arm is homologous to the horse's front leg. The bat's wing is homologous to the whale fin.
With this information, we can conclude that homologous have same embryological origin of structures from different organisms, and these structures may or may not have the same function
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