Answer:
I have roots that no one sees and I am taller than trees. Up, up I go, but never do I grow. What am I?
I am heavy forward, but backward I'm not. What am I?
I'm found in socks ties and hands. What am I?
You can see it everyday, but cannot touch it at will. What is it?
I get dirty when wiping things clean. What am I?
I flow from the Homerβs mouth when he sees doughnuts.