Answer:
Why is a river rich?
What do you call a fish without an eye?
Hard iron on horse. Cow's hide on man.
I saw a strange creature. Long, hard, and straight, thrusting into a round, dark opening. Preparing to discharge its load of lives. Puffing and squealing noises accompanied it, then a final screech as it slowed and stopped.
What is long and filled with seamen?
People take me on walks and I run and have fun. What am I?