Answer:
By myself, I'm practically nothing. Worthless as a leader, but when I follow a group, their strength increases tenfold. What am I?
I start new then become old. Start clean but become dirty. I usually start big then become little. What am I?
I climb higher as I get hotter. I can never escape from my crystal cage.
I'm many people's favorite place even though many don't remember their stay. You'll love to come but hate to leave if you get cold use my sleeves.
I don't live within a house, nor do I live without. Most will use me when they come in, and again when they go out. What am I?
I'm the source of all emotion but I'm caged in a white prison.
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic