yes
No, a step parent has no legal rights to the child. They can only get that through the court or adoption.
For a step parent to have parental rights over the step child they would have to adopt.
It depends on the terms of the separation agreement, but in general, no: giving up your rights as a parent does not necessarily release you from your obligations as a parent.
Not without the legal system involved. Not without the legal system involved.
Depending on the state laws, no, it's not legal. If the parent has acknowledged their parental rights on a birth certificate, they have paternal or maternal rights to visit or see the child regardless of monetary trade. If a parent has NOT been placed on a birth certificate/acknowledged parent rights, they legally do not exist as a parent to the child and therefore do not have rights or responsibilities, unless first undergoing either a DNA/Paternity test or admitting to the conception.
Absolutely not. Child visitation rights are granted by the court, not by you. It is illegal to prevent someone with legal visitation rights to see the child.
In either of those scenarios, the non-legal or second parent will likely have few rights regarding the child. While there are a small number of state courts that consider the second parent to have equal rights to the child regardless of biological or legal ties, most courts look only at biological and legal rights and go no further.
Clear evidence of child abuse
at times yes but usually if the noncustodial parent does want to see the child they will be denied visitation rights and not be allowed to see the child
No, A god mother does not have legal rights to a child. A god mother is a honorary position given to someone.
No. In order for your brother to adopt your child you and the other parent must consent to the adoption and then your parental rights will be terminated. Your brother would be the legal parent of the child. You cannot share legal custody with your brother.
In most jurisdictions the termination of parental rights divests forever the parent and child of all legal rights, privileges, duties, and powers between each other except for the child's right to inherit from the terminated parent. You should seek the advice of an attorney in your area.