Answer:
I bring light to a dark world. In a current I travel and through tunnels I am hurled. Touch me and I'll kill you. What am I?
My second is performed by my first. A thief by the marks of my whole might be caught. What am I?
I turn everything around but I cannot move. When you see me you see you!
The warmer I am, the fresher I am. What am I?
I'm not alive and yet I grow. Just put me next to where it glows. A favorite in summertime best with friends when combined
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.