Answer:
Without this, H2O would just be 2O
A canvas full of stars.
Round and round I go never stopping in a continuous flow. I hang out with numbers each and every day and nothing ever gets on my way. What am I?
Not my sister nor my brother but still the child of my mother and father. Who am I?
You are on an electric train. Which direction will the smoke fly in?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?