About One Hundred Years Ago,cities Began to Address the Problems

question 31

Multiple Choice

About one hundred years ago,cities began to address the problems of sewage disposal by dumping sewage into nearby rivers via storm water drainage systems.One of the results of this strategy was that

• A)cities no longer needed to treat drinking water that was drawn from nearby river systems.
• B)the quality of the water in the local rivers and streams greatly improved.
• C)people living upriver of these cities were more likely to experience contamination of their drinking water sources.
• D)people living downriver of these cities were more likely to experience contamination of their drinking water sources.

---

Definitions:

Placebo Effect

Experimental results caused by expectations alone; any effect on behavior caused by the administration of an inert substance or condition, which the recipient assumes is an active agent.

Overconfidence

The tendency to be more confident than correct—to overestimate the accuracy of our beliefs and judgments.

Illusory Correlation

The perception of a relationship where none exists.

Space Study Time

The planned and structured periods dedicated to the study and exploration of outer space.