Answer:
What has roots that nobody sees, and is taller than trees. Up, up it goes, and yet it never grows.
Up on high I wave away but not a word can I say.
What was the first man made invention that could see through a wall?
What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?
It is a gruesome form of betray.
What scientists might call your pooch.
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?