Riddles

When I'm young I'm tall and when I'm old I'm short. When I'm alive I glow, but because of your breath I die. What am I?

I have a lot of keys but I can't open anything. What am I?

I'm heavier than a whale but can float over a mountain. What am I?

I am not alive, but I grow. I don't have lungs, but I need air. I don't have a mouth, but water kills me. What am I?

What has hands and a face but can't hold anything or smile?

I belong to you, but your friends use me more than you do. What am I?

I can run but I cannot walk. I have a mouth but I can't talk. What am I?

What 2 things can you never eat for breakfast?

I have a tail and a head, but no body. What am I?

How many months in the year have 28 days?