Answer:
It covers you, you lose it every day and you'd die without it.
Environmentalists want to keep this from drying.
I can be as thin as a picture frame but my insides have many things you can see.
What comes one time in today, three times in tomorrow and never in the future?
A standard dimension for sandwiches and rulers
I am a rock group with four members. All dead one was assassinated.
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?