Answer:
Wind and cord combine, buzzing in the box. In all this we find, though to some the use is lost. What am I?
Six letters it contains. Take away the last and only twelve remains. What is the word?
I sleep by day, I fly by night. I have no feathers to aid my flight. What am I?
The Titanic is still here. What am I?
I break down buildings, I crumble mountains but you can't see me. 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.