Answer:
Consuming food would be pretty tough without these chompers
I can be as thin as a picture frame but my insides have many things you can see.
I make billions of dollars selling Windows. Who am I?
How many months of the year have 28 days?
Once you know it exists, it no longer exists. What is it?
I am a rock group with four members. All dead one was assassinated.
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?