Answer:
What can be cracked before it's used?
Born in the ocean and white as snow. When I fall back to water, I disappear without a trace. What am I?
lighter than feather and softer than silk yet the strongest man in the world cannot hold me for more than a few minutes.
I am a piece of paper that takes most people 3 or 4 years to get. What am I?
Wind and cord combine, buzzing in the box. In all this we find, though to some the use is lost. What am I?
I am a rock group with four members. All dead one was assassinated.