Answer:
What jumps when it walks, but sits when it stands?
I'm as simple as a circle worthless as a leader; but when I follow a group their strength increases tenfold. By myself I'm practically nothing.
No matter how little or how much you use me, you change me every month.
I cannot be burned in fire or drowned in water. What am I?
I am in the past, never in the future. I don't exist, but have existed. I saw what you saw, and this is what I will ever see. What am I?
What is the middle of water but is not an island?
What am I?
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic