Answer:
I follow you all the time and copy your every move but you can't touch me or catch me. What am I?
What invention lets you look right through a wall?
You cannot keep me until you have given me. What am I?
There is one in every corner and two in every room.
In my life I must bare my bloodline I must share.
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.