Answer:
You get many of me, but never enough. After the last one, your life soon will snuff. You may have one of me but one day a year, When the last one is gone, your life disappears.
What grows in winter, dies in summer, and grows roots upward?
Snake coiled round and round. Snake deep below the ground. Snake that's never had a head. Snake that binds but not with dread.
I cost no money to use, or conscious effort to take part of. And as far as you can see, there is nothing to me. But without me, you are dead.
What does everyone know how to open but not how to close?
What is so fragile that saying its name breaks it?
Difficult
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?