riddles

I have to be opened, but I don't have a lid or a key to get in. What am I?

I shave every day, but my beard stays the same. What am I?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

When you have me, you immediately feel like sharing me. But, if you do share me, you do not have me.

I make two people out of one. What am I?

I add lots of flavor and have many layers, but if you get to close I'll make you cry. What am I?

Give me food, and I will live; give me water, and I will die. What am I?

What can you catch, but not throw?

I have keys without key locks. I have space without rooms. You can enter but you cannot go outside.

I have teeth but can't eat