Answer:
What has many teeth but can't bite?
I'm a word that is not even strange. What am I?
Born in the ocean and white as snow. When I fall back to water I disappear without a trace.
People need me, yet they give me away every day. What am I?
I'm not a bird, but I can fly through the sky. I'm not a river, but I'm full of water. What am I?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?