What Is Probably the Biggest Problem for U

question 18

Multiple Choice

What is probably the biggest problem for U.S.national parks today?

• A) popularity
• B) regulations
• C) environmentalists
• D) rock collectors
• E) soil erosion

---

Definitions:

GDP

Gross Domestic Product refers to the sum total of all monetary values of final goods and services produced within the geographical confines of a country during a given time frame.

Income Effect

The change in an individual’s or economy’s income and how that change will affect the quantity demanded of a good or service.

Substitution Effect

The change in consumption patterns due to a change in the relative prices of goods, leading consumers to replace more expensive items with less expensive ones.

Interest-Rate Increase

A rise in the cost of borrowing money, reflected in a higher percentage charged on loans and credits.