Answer:
I go through a door but never go in, and never come out. What am I?
I'm not alive but I grow I don't have lungs but I need air I don't have a mouth but water can kill me. What am I?
It's been around for millions of years but is never more than a month old. What is it?
I am black, white, and read all over. What am I?
Sing me to a baby about to go to sleep.
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?