Answer:
This is a shape and a symbol that we literally cannot live without. What is it?
I call the trees my home, yet I never go inside, and if I ever fall off the tree I will be surely be dead.
I occur twice in eternity. And I'm always within sight.
It can be used onstage or to express admiration. What is it?
Touch this and you'll regret it. But if it's cold, you won't forget it. What is it?
It is something you will never see again.
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?