Answer:
I have roots that no one sees and I am taller than trees. Up, up I go, but never do I grow. What am I?
I get paid to shoot people then blow them up.
When you need me, you must find me. When you find me, you no longer need me. What am I?
I have three feet but I cannot walk. What am I?
I am an insect and the first part of my name is the name of another insect. What am I?
What made Cyclops quit teaching?