Good Riddles

 
Riddle #753 (medium)

Question: All things I devour: Birds, beasts, trees, flowers.
I gnaw iron, bite steel.
I grind hard stones to meal.

What am I?

Riddle #752 (medium)

Question: A young woman is attending her mother's funeral. While there, she meets a man she has never seen before and falls in love immediately. After the funeral she tries to find him but cannot. Several days later she kills her sister.

Why does she kill her sister?

Question: What time is it when an elephant sits on your fence?

Riddle #750 (medium)

Question: I grow from trees and your home,
once I am grown I fall to my doom.

What am I?

Question: A fast food restaurant sells chicken in orders of 6, 9, and 20.

What is the largest number of pieces of chicken you cannot order from this restaurant?