2
1
Yes. Each sets of parents has to give consent for their child.
tetrad
3 sets
Depends. Some children who have contact with both they're biological and adoptive parents refer to both sets as "mom & dad". So I would talk to both sets and ask what they feel comfortable as to what you should call you're biological parents.
there are 23 sets
Inbreeding
Yes - especially if BOTH sets of parents are dead.
Inbreeding!
two sets of wings
Three sets
KidKraft has been rated as one of the best play kitchen sets by parents although there are others on the market. Guidecraft is another well-known brand and both focus on safety of children.