Answer:
I go up when the rain comes down
I am lighter than air, but a hundred people cannot lift me. Careful, I am fragile. What am I?
I have long legs crooked thighs little head and no eyes.
Though not a plant I have leaves. though not a beast I have spine. Though many wouldn't need me I am more valuable than wine.
What is always in front of you but can't be seen?
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.