Answer:
Drop me and the world will shatter. You can always find me where you empty your bladder. What am I?
What is black when you buy it, red when you use it, and gray when you throw it away?
I'm a precious stone in a pack of cards. What am I?
Railroad Crossing, look out for the cars. Can you spell that, without any R's?
I have cities with no people forests with no trees and oceans with no water.
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.