Answer:
Drop me and the world will shatter. You can always find me where you empty your bladder. What am I?
What can travel around the world while staying in a corner?
you need thousands of me to create a digital image.
What do you call a pig that is no fun to be around?
I stand in one place yet I fill a whole room. I can be filled with molten rock and come in every hue.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.