Short Riddles and Answers

Question: A mirror for the famous, but informative to all.
I'll show you the world, but it may be a bit small.

What I am?

Question: If you have three apples and four oranges in one hand and four apples and three oranges in the other hand, what do you have?

Question: I move slowly but I'm dead. I leave and then I'm back.I'm clear and then I'm red. I'm many neurotics' snack. What am I?

Question: When warm my house expands and when cold it contracts,
I am vital to a certain type of pact.

What am I?

Question: Four hang, four sprang, two point the way, two to ward off dogs, one dangles after, always rather dirty.

What am I?