Answer:
I am always in front of you, but yet I am never here. What am I?
The more of me you take, the more I appear behind you. What am I?
What has a thumb and four fingers but is not alive?
I can only be played on a windy day. What am I?
I am a protector. I sit on a bridge. One person can see right through me, while others wonder what I hide. What am I?
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.