Answer:
I may be of the eye, in order I am pie. In my center there is a star, I keep medics where they are. What am I?
I can fall off a building and live but in water I will die.
I transfer oxygen from the atmosphere to your blood
I give people a huge fright, but at the end I'm sweet. I normally celebrate at night, when there's less heat. What am I?
I have a name that's not mine and no one cares about me in their prime. People cry at my sight and lie by me all day and night.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.