Answer:
What tree that definitely grows does not have a shadow and does not grow fruit?
Inside a burning house, this thing is best to make. And best to make it quickly, before the fire's too much to take.
Runs smoother than any rhyme, loves to fall but cannot climb!
Whoever makes it, tells it not. Whoever takes it, knows it not. And whoever knows it wants it not
I am a span of time you can always see through I am also the timepiece with the most pieces. What am I?
I am your mother's brother's only brother in law. Who am I?