Never falling, often moving. Untouchable, but sometimes deadly. Another danger signalling, often seen but never staying. What am I?

Answer: Smoke

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Never resting, never still, Silently moving from hill to hill, I do not walk, run or trot, But all is cool where I am not. What am I?
Never the same, In multitude you see me. You love me, you hate me, What am I?
No matter where you are, I am there with you right now. Some people love me, some people hate me, and if you see me once, you’ll never see me again. What am I?
Not born, but from a Mother's body drawn, I hang until half of me is gone. I sleep in a cave until I grow old, then valued for my hardened gold. What am I?
Often held but never touched. Always wet but never rusts. Often bits but seldom bit. To use it well you must have wit. What am I?
On the wall, in the air, You just want me out of your hair, Try to catch me, but you cannot, For my vision is thousand fold. What am I?
One by One, We Fade. All at once, we are remade.Upon the ending of night, Lovers part, We reunite. What are we?
One prisoner I hold who bangs my walls. I’m alarming to all, Yet charming as well. I’m smooth and shiny to all. What am I?
One simple click, one simple flash. Preserving a memory, for years I will last. What am I?
One way I'm loose, one way I'm tight. Out with left, in with right. What am I?
One where none should be, or maybe where two should be, seeking out purity, in the kings trees. What am I?
Only one foot tall but I govern you. What am I?