Answer:
I am lighter than the material I am made of. You see parts of me but more of me is hidden underneath.
I am carried by mad animals.
I have no life but I can die. What am I?
The last man on Earth received a phone call, who was the caller?
I am a portal to another world which you cannot enter. Only you can see me but I can't see you.
What did the piece of wood say when he saw the screwdriver and screws approaching?