What has to be broken before you can use it?

The more of this there is, the less you see. What is it?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

I look flat, but I am deep. Hidden realms I shelter. Lives I take, but the food I offer. At times I am beautiful. I can be calm, angry, and turbulent. I have no heart but offer pleasure as well as death. No man can own me, yet I encompass what all men must have. What am I?

Which point will the car reach to go out?

I am a type of food that is often found in the fridge and can be white in colour. What I am?
Hint 1: I am a dairy product.
Hint 2: You can spread me on the bread.

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

If eleven plus two equals one, what does nine plus five equal?