Answer:
I have three feet but I cannot walk. What am I?
In your fire you hear me scream creaking and whining yet I am dead before you lay me in your hearth.
You can build or destroy. Let creativity soar but be careful at night.
I am a path between high natural masses; remove the first letter to get a path between man-made masses.
I am full of holes but still holds water.
What made Cyclops quit teaching?