For years grade school students faced this question on their science tests: "true or false—the famous rings of the planet saturn are composed of solid material." if the students marked "true," they lost credit, because the "truth" was that saturn’s rings were composed of gas or dust. then, in 1973, radar probes revealed that all those wrong answers had been right. saturn’s rings are, in fact, composed of solid matter.12 this confusing case seems to suggest that the truth changed. did it really? explain.

This term refers to the number of people per unit area (usually a kilometer or a mile). this could refer to the number of people per square mile in a city, a county, a province, a state, or a nation.

Which of the following is not a common estate planning goal? a. maximizing transfer costs. b. minimizing transfer taxes. c. providing for liquidity at death. d. fulfilling client's healthcare decisions.

Asociologist wants to study a culture that occurs in some women’s prisons: “state families,” in which individual prisoners take on certain roles within a group of like-minded prisoners. there is previous evidence that younger prisoners will use older inmates who play the roles of grandparents as a resource before they will turn to staff for and advice. the lieutenant in charge of a dorm of long-term prisoners offers to gather volunteers to speak to the researcher and also offers to vouch for the integrity of the researcher. the use of this staff is: a valid use of a statistical technique referred to “snowball sampling” wherein the inclusion of the first subject leads to the recruitment of another one subject.a useful tactic in obtaining a sample of prisoners who both meet the criteria and who will be honest with the researcher.wrong and is prohibited; subject selection needs to be free from intervention by prison authorities or prisoners.acceptable only when the researcher’s irb grants a special waiver.