Answer:
I tremble at each breath of air and yet can heaviest burdens bear.
I can be written, I can be spoken, I can be exposed, I can be broken. What am I?
In my life I must bare, my bloodline I must share. What am I?
I cut through evil like a double edged sword and chaos flees at my approach. Balance I single-handedly upraise through battles fought with heart and mind instead of with my gaze.
Who keeps the ocean clean?
I am rarely touched but often held. If you are smart you'll use me well. What am I?