Answer:
What has thousands of ribs and two backbones?
Without what would everyone lose their head?
He's small but he can climb a tower.
What is the center of gravity?
The part of the bird, that is not in the sky, Which can swim in the ocean and always stay dry. What is it?
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.