4 mps increase in 10 seconds = 2 mps increase in 5 seconds = .4meters/2sec
Because a<span>t some point during its life cycle, it had a dorsal hollow nerve chord, notochord, pharyngeal gill slits, and finally a muscular tail.
hope this helped and is right :)</span>
Answer:
the last one which I'm guessing is d......cause it kinda messed up