6 simple riddles

1. There was a green house. Inside the green house there was a white house. Inside the white house there was a red house. Inside the red house there were lots of babies. What is it?
2. What kind of room has no doors or windows?
3. Take off my skin - I won't cry, but you will! What am I?
4. Imagine you are in a dark room. How do you get out?
5. What is at the end of a rainbow?
6. Which weighs more, a pound of feathers or a pound of bricks?

If you know the answers, comment it!