Riddles X

What can you break, even if you never pick it up or touch it?

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

What is seen in the middle of March and April that can't be seen at the beginning or end of either month?

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

What can travel around the world while staying in a corner?

I am an odd number. Take away a letter and I become even. What number am I?

I have no life, but I can die. What am I?”

What has a bed but never sleeps, can run but never walks, and has a bank but no money?”

What begins with T, finishes with T, and has “T” in it?”

What goes up but never goes back down?”