Answer:
Without this, H2O would just be 2O
Prior to smartphones, people used this to record their lives.
If you drive on this, pedestrians and the police will be pretty upset with you.
Very helpful if you intend to go gently down a river.
Women don't have and don't want it. Men get it but sometimes they try to get rid of it. What is it?
Two little holes in the side of a hill. Just as you come to the cherry-red mill.
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?