The past. Flashbacks in books and movies usually represent the main character or a character going into their past; usually they are remembering something important that has happened in their life.
Pretty sure the onion will still cause you to cry but like o k .
I believe that it would be Vitamin C and Vitamin E.
I hope this helps a little! =D
Yes.
But too much of anything is never good. Balanced portions are always important.