Answer:
I am made of wood but can't be sawed? What am I?
Part carbon, part water, I am poison to the fishes. Many falsely claim my name, I am the pause that refreshes. What am I?
I climb higher as I get hotter. I can never escape from my crystal cage.
When I live I cry if you don't kill me I'll die.
I can swim but never get wet. I can run but never get tired. I follow you everywhere but never say a word.
I repeat only the last word you say. The more I repeat, the softer I got. I cannot be seen but can be heard. What am I?