How have the courts dealt with a father's appeal from a disposition order and from a jurisdictional finding under section 300, subdivision (b) of the Child Support Act?

Though Father appealed from both the jurisdictional and disposition orders, he challenges only the juvenile court's jurisdictional findings under section 300, subdivision (b). (See, e.g., People v. Stanley (1995) 10 Cal.4th 764, 793 ["'Every brief should contain a legal argument with citation of authorities on the points made. If none is furnished on a particular point, the court may treat it as waived, and pass it without consideration'"].) The statute provides, in pertinent part, that a child comes within the jurisdiction of the juvenile court if "[t]he child has suffered, or there is a substantial risk that the child will suffer, serious physical harm or illness, . . . by the inability of the parent . . . to provide regular care for the child due to the parent's . . . mental illness, . . . or substance abuse." ( 300, subd. (b).) Jurisdiction under section 300, subdivision (b) is warranted by a showing "the child has suffered or there is a substantial

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