Answer:
a young man was 45 age in 1995 and 40 in 2000 how is it possible
Lighter than what I am made of, More of me is hidden Than is seen.
You heard me before, yet you hear me again, then I die. Until you call me again.
What can be swallowed, but can swallow you?
What can you share and still have all for yourself?
Break me and I am better immediately set and harder to be broken again.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?