You can ask him but not force him. If he is harmful to the child you can bring it to court and the court can take his parental rights away.
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.
Termination of one parent's rights does not affect the other parent's rights.
In general, parental rights are terminated either preparatory to an adoption, or after a trial in which it is determined that the parent is unfit. In any case, termination of parental rights does not, in itself, terminate child support.
Generally speaking, once parental rights (which is a different thing than custodial rights) are terminated a person is no longer responsible for child support. However, you cannot just "sign over" your parental rights. Parental rights can only be terminated by a judge, and unless it's a case of adoption (where someone else is willing to assume your parental responsibilities), the judge generally says "no, I won't allow it"
In general, parental rights are terminated either preparatory to an adoption, or after a trial in which it is determined that the parent is unfit. In any case, termination of parental rights does not, in itself, terminate child support. You need to consult with an attorney or some other legal advocate who can review your situation and explain your options.
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.
I am presuming that you're asking if one parent can relinquish her parental rights and basically give the child to another adult who is unrelated and not the child's other parent. The basic rule is that if one parent terminates her rights then the other parent has those rights unless the rights of that adult were previously terminated. I am sure that in any case the adult to whom the child was given must officially adopt the child by going through certain judicial proceedings.
There is no hard and fast rule. The Court must determine that it is in the best interest of the child that parental rights be terminated. Contact with the child is considered, but many other issues are also considered.
That is a decision made by the court. A court can grant a partial or complete Termination of Parental Rights if the judge feels it is warranted for reasons other than said parent is relieved of his or her financial obligation to their minor child/children. Generally voluntary TPR's (those requested by a parent) are only granted when a child is being legally adopted.
If you sign over your parental rights, you do just that. You forfit any rights whatsoever you have to the child in question. You will have no legal relation to the child and no right to visit, make decisions for, or claim to be the parent of said child. You are also absolved from paying any future child support. This legal action is not reversible, and takes extreme court measure and consideration.
That depends on the circumstances of the removal of the other child(ren). If there is a significant history, than yes. Often, the pregnancy itself is a violation of court orders to not get pregnant again.