A good science project.
This was a very plesent little animation for what seems like just for a science class or possibly history.
I'd like to break it down.
Your animation is okay, but you need to work on your motion tweens. Notibly, your raptor tail wiggles, showing the background. You can fix this by having the body go further as an under layer and over lap with the tail. This way when the tail moves, it shows the underlayer of the moving object instead of the background itself. It's hard to explain in text. Just watch some other medium quality animations and studdy the motion.
Your narriation is also dry. Very very 'like your in class.' On of the speech tricks is to know your speech so well that you don't read from the paper. Being on a computer and doing this is easy since you can do it sentance by sentance and use a sound editing program (even a low quality one) and edit it.
Of course, I'm sure you were mostly going for the good original grade rather than the majestic flash piece. Just trying to give some helpful creative critisim, and I hope you earned an A. Better than most of the crap I've seen turned in.