I believe the answer is: Family structures are changing, but families remain important to American life.
The main reason of the changing structures is the increase in divorce rate, and non-monogamous relationship. In the past, almost all children only have one father and one mother. In recent years, children could have more than 2 parents or even only one (in case of single parenthood)
D) stock is available to all members of the public
Potential Energy or Kinetic
Answer:
in adults 100-120 compression per minute
Explanation:
this will maximize cardiac output and provide adequate perfusion pressure
