<span>The reaction to it promotes social unity.</span>
C. the flies could not get into the jar to lay their eggs
Answer:
Chordates share some common traits. At some point in their life cycle, they have a notochord, a nerve cord, and pharyngeal (fayr uhn JEE uhl) slits in the neck or throat. The notochord is a flexible rod that supports the animal's back. ... Sharks are one type of vertebrate animal that have backbones made of cartilage.
It would be, (B) It enables scientists to better differentiate among the various species.
