My Little Issue with the 2010 Census

     OK, so I received our 2010 Census in the mail yesterday.  I opened it up today to fill it out so I wouldn't forget.  It's really easy and very general and only took a few minutes.  My issue is with the question, "How is this person related to Person 1?"  Since I filled it out I put myself as Person 1, Daniel I put as Person 2 and listed him as my Husband.  Now on to the children living in my house, because that is all they want to know about.  Amber is living on her own now and will fill out her own Census, or she better!  Anyway, I then started to list the kids, when I went to choose their relationship to me there is a choice "Biological son or daughter" and "Adopted son or daughter".  I'm sorry, but I don't understand why that matters.  All of my children are equal in my eyes and they are all my children.  My name is on 3 of their birth certificates, or will be when we receive John Mac's in the mail soon.  Anyway, I felt weird answering biological for the girls and then adopted for John Mac.  Yes my children came to me in different ways, but they are all mine no matter what.  If Amber was still living with us and I still listed myself as Person 1 then I would have had to list her as "Stepson or Stepdaughter", although if Daniel was listed as Person 1 she would be under "Biological son or daughter".  I know it's not that big of a deal and we know he's ours just as much as the others, but for some reason when I read it, it just hit me wrong.  I love adoption and I love talking about adoption, so I guess I should be grateful that I get to list him at all.  Because without adoption he would not be in our lives and my life would not be complete.