A "Hole" in the Ozone Layer Was First Discovered Over

question 1

Multiple Choice

A "hole" in the ozone layer was first discovered over

• A) Antarctica
• B) Hollywood
• C) the Equator
• D) the United States
• E) Africa

---

Definitions:

Four-Firm Concentration Ratio

A measure that indicates the total market share held by the largest four firms in an industry, used to assess the level of competition.

Product Differentiation

Product differentiation is the process of distinguishing a product or service from similar offerings in the market to make it more attractive to a particular target market.

Market Power

The ability of a firm or group of firms to control prices or output in a market, often leading to reduced competition.