No. Adoption removes the rights to the biological parents' estate.
no
Since this is the adoption category I assume you mean not the biological grandchildren but foster kids who have never been adopted. And no, they have no right at all to anything their foster family leaves behind unless they are mentioned in the will. If you mean biological children they inherit their parents who in their turn inherit their parents, your grandparents. So unless the grandchild is mentioned in the will or the parents are deceased, the grandchild will not inherit the grandparents.
Generally no. Step parents do not take on responsibility for children of other relationships. A disabled child has to be maintained by the biological parents. This only falls away if the child is adopted by someone. If the step parent is married in community of property with the biological parent then their common estate is liable for maintaining a disabled child of either parent. In the USA there may be laws in some states that require step parents to support unrelated children, more especially when the biological parent spouse fails to do so.
to the parents they are blood related to, or adopted, otherwise they must make them an heir by including them in their will.
If you live in the US (and without knowing the state) generally speaking, adoptive or biological is irrelevant. If there's a will and the child is not named, the child gets nothing, unless they can successfully contest the legality of the will (which takes a strong case).
The estate will be responsible, not the children. They will not be able to inherit until they are resolved.
Generally, biological and legally adopted children have equal rights of inheritance in most jurisdictions. You can check the law in your state at the related question link.Generally, biological and legally adopted children have equal rights of inheritance in most jurisdictions. You can check the law in your state at the related question link.Generally, biological and legally adopted children have equal rights of inheritance in most jurisdictions. You can check the law in your state at the related question link.Generally, biological and legally adopted children have equal rights of inheritance in most jurisdictions. You can check the law in your state at the related question link.
The adopted child has the same rights as the biogical children, if there is no will. If there is a will, the court will insure that the desires of the testator are followed. The court may make adjustments if the will was written before the adoption.
If he legally adopted you, perhaps you might be an heir if his estate is intestate. You should speak with an attorney in your jurisdiction who is familiar wth your state probate laws.
Children are usually disowned by their parents after the child does something against the parents wishes. Whether the child was adopted has no affect on if the parents disown them or not.
The estate is responsible for the debts. If the estate has no assets, the creditors will not get paid. If there are not enough assets to pay the debts, the beneficiaries will not receive anything.
Biological and legally adopted children generally have the same rights in their parent's estate if their parent dies intestate, or, without a will. Children do not inherit an interest in property that was held jointly with a surviving spouse. However, they may inherit an interest in property held solely by the decedent. You can check the laws of intestacy in your state in the related question below.