Fun Riddles

Question: What is something that you always have with you but you always leave behind?

Question: There is a 100 pound watermelon laying out in the sun. 99 percent of the watermelon's weight is water. After laying out for a few hours 98 percent of the watermelon's weight is water.

How much water evaporated?

Question: What always eats but is always hungry?

Question: Tom and Joe want to sit behind each other in class and the teacher arranges them so they are both happy.

How did the teacher do so?

Question: The more of me you have, the longer your life.
The more of me you have, the less you have left.

What am I?