Answer:
What loses its head in the morning but gets it back at night?
When young I am sweet in the sun. When middle-aged I make you gay. When old I am valued more than ever.
Dead on the field lie ten soldiers in white killed by one blade yet there was no fight. What are they?
I am rarely touched but often held. If you are smart you'll use me well. What am I?
What has four wheels and flies?
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.