Answer:
What is that you will break everytime you name it?
It is by nature, soft as silk; A puffy cloud, white as milk; Snow tops this tropical crop; The dirtiest part of a mop
What has three feet but no arms or legs?
I am the greatest teacher out of them all, but alas in the end I kill my pupils.
A house full, a yard full, a chimney full, no one can get a spoonful.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.