Answer:
I make everyone blind. You can't see me but I will always come back for you. What am I?
I am very afraid of doing scary activities.
I am between earth and heaven. What am I?
What is the beginning of eternity the end of time and space the beginning of every end and the end of every race?
When it comes to me, you go on red and stops on green. What am I?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?