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adreamer adreamer
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7 years ago
An explosion of genetic diversity similar to that which occurred during the Cambrian Period hasn't happened recently, most likely because
A) evolution of life on Earth is no longer occurring
B) such an explosion can occur only for simple organisms and not complex ones
C) there are no more ecological niches available to allow this to happen
D) of the widespread presence of efficient predators that make it much more difficult for entirely new organisms to appear
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Life in the Universe

Life in the Universe


Edition: 4th
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19Clyde19Clyde
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7 years ago
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adreamer Author
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7 years ago
I appreciate what you did here, answered it right Smiling Face with Open Mouth
ouasfoudgewu
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Yesterday
Thank you, thank you, thank you!
MLynneMcMillan
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2 hours ago
Helped a lot
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