Answer:
I break down buildings, I crumble mountains but you can't see me. What am I?
I am a seed with three letters in my name. Take away the last two and I still sound the same.
There is one in every corner and two in every room.
What word has kst in the middle, in the beginning, and at the end?
What has feet and legs, and nothing else?
I flow from the Homerβs mouth when he sees doughnuts.