Answer:
It's usually found dried, but often kept slicker. Above another need, it's said to be thicker. What is it?
I am whole but incomplete. I have no eyes, yet I see. You can see, and see right through me. My largest part is one fourth of what I once was.
What is neither inside the house nor outside the house but a necessity for any home?
Ripped from my mother's womb. Beaten and burned, I become a blood thirsty killer.
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.
I have two bodies joined together as one. When standing still I run and run.