Answer:
I pass before the sun, yet make no shadow. I'm all around you, but you cannot see me. What am I?
I am the thing that is used to make your weight. What am I?
Good memory, skin like the sea. A great beast I am, yet vermin frightens me. What am I?
Lovely and round I shine with pale light grown in the darkness a lady's delight.
I am all around yet to me you are half blind. Sunlight makes me invisible and difficult to find.
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.