With the extinction of the dinosaurs 65 million years ago, multiple niches that the dinosaurs once filled opened up and allowed

Question

With the extinction of the dinosaurs 65 million years ago, multiple niches that the dinosaurs once filled opened up and allowed mammals the opportunity to evolve and exploit those niches. This is an example of 
sympatric speciation
adaptive radiation
phylogeny
reproductive isolation
phylogenetic isolation

Kunduz · Accepted Answer

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