Lead Enters the Atmosphere as a Particulate Pollutant

question 39

Multiple Choice

Lead enters the atmosphere as a particulate pollutant. This is a problem because it _________________.

• A) provides excess nutrients to waterways, resulting in eutrophication
• B) causes central nervous system damage in humans
• C) is a precious metal, and it is being lost to the atmosphere
• D) can become attached to radon
• E) will cause the ozone hole to increase

Recognize the significance of the scale of measurement in choosing the correct statistical test for analysis.

Apply knowledge of statistical tests to examine relationships between variables.

Understand the concept of fixed and variable costs and their implications in short and long run decisions.

Analyze the principle of diminishing and negative returns and its effect on production.

---

Definitions:

Laffer Curve

A representation of the relationship between rates of taxation and the resulting levels of government revenue that illustrates there can be an optimum tax rate that maximizes revenue.

Tax Revenues

The income that is collected by governments through taxation.

Progressive Tax

A tax in which the average tax rate rises with income. People with higher incomes will pay a higher percentage of their income in taxes.

Proportional Tax

A tax in which the average tax rate is the same at all income levels. Everyone pays the same percentage of income in taxes.