Answer:
I lose my head in the morning and regain back it at night.
I start in little but I end in full you'll find me in half and complete.
I am essential to life on earth! I am split into thirds. Two thirds are the same. One of the thirds is 8. The other two are 1 each.
One simple click, one simple flash. A piece of memory, for years I'll last. What am I?
What's made of water but if you put it into water it will die?
No matter how little or how much you use me, you change me every month.
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic