Question : A shift from a reliance on .............. to reliance on …….. was pivotal in the evolution of all vertebrates.

Question : A shift from a reliance on .............. to reliance on �

1.	Question : A shift from a reliance on .............. to reliance on …….. was pivotal in the evolution of all vertebrates.
Answer» NOTOCHORD; a backbone filter FEEDING, jaws gills, lungs all of the above Answer :D