Answer:
Take off my skin I won't cry but you will.
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.
If two's company and three's a crowd what are four and five?
You use a knife to slice my head but you weep beside me when I am dead
I am all around yet to me you are half blind. Sunlight makes me invisible and difficult to find.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic