Answer:
Part carbon, part water, I am poison to the fishes. Many falsely claim my name, I am the pause that refreshes. What am I?
Without a bridle, or a saddle, across a thing I ride a-straddle. And those I ride, by help of me, though almost blind, are made to see. What am I?
I help engines spin and pants stay up.
I start with T end with T and within me is T.
When you buy me I am costly, but the only use I have is hanging only. What am I?
Born of earth, but with none of its strength. Molded by flame, but with none of its power. Shaped