Answer:
I am heavy forward, but backward I'm not. What am I?
I was not born but I am here. I have no name but I am given many. I was made by science and life
You use me between your head and your toes the more I work the thinner I grow.
I march before armies, a thousand salute me. My fall can bring victory, but no one would shoot me. What am I?
A hole in a pole. Though I fill a hole in white I'm used more by the day and less by the night
Give it food and it will live, give it water and it will die.