Answer:
Part carbon part water I am poison to the fishes. Many falsely claim my name I am the pause that refreshes.
Used left or right I get to travel over cobblestone or gravel. Used up I vie for sweet success used down I cause men great duress.
I stand up tall and am made of steel With baguettes and garlic at my heel. I love the colors red white and blue but obviously not as much as you. I am a marvel for all to see Though to some I am a monstrosity!
Everyone asks for me but yet everyone hates to face me. For someone I am agony, for others I am relief! What am I?
I have a foot but no leg. What am I?
I start with T end with T and within me is T.