Good Riddles

Question: What makes a hotel hot even when below zero temperatures?

Question: Can you name 3 colors that have no other words that rhyme with them?

Question: A king without a crown.

Question: Resurrected, they descend by the millions. Sometimes, to nourish and give life. Other times, to take lives or destroy. They have been known to fill entire valleys and block roads only to disappear before executing their long journey back to the top. What are they?

Question: What is that thing we buy for eating but cannot eat it?