Answer:
Part carbon part water I am poison to the fishes. Many falsely claim my name I am the pause that refreshes.
You throw me away, I find my way back. Traditionally, I'm wooden with an arch in my back. What am I?
I'm tall when I'm young and I'm short when I'm old. What am I?
I mean goodbye for South Americans.
What has 4 fingers and a thumb but isn't alive?
When is it bad luck to see a black cat?