Answer:
It's red liquid but not liquid and it's not red. What is it?
A large oasis in the desert. Come with cash and leave with none.
You use me from your head to your toes. The more I work, the thinner I grow. What am I?
I am a ship that can be made to ride the greatest waves. I am not built by objects but built by minds.
My days are numbered. What am I?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.