Answer:
What gets bigger the more you take away?
I break down buildings, I crumble mountains but you can't see me. What am I?
People need me, yet they give me away every day. What am I?
I have a bank, but no money. I have a bed but do not sleep.I have a mouth but cannot eat. What am I?
Cloud is my mother, wind is my father. What am I?
Those with eyes bigger than their stomach will definitely leave the restaurant with one of them. It is named after a house pet as well.