What Is a Planetary Nebula

question 61

Multiple Choice

What is a planetary nebula?

• A) a nebula of gas and dust around a giant planet
• B) a nebula of gas and dust around any planet
• C) the result of a relatively gentle stellar outburst in which matter is ejected into space
• D) the result of a violent stellar outburst in which the entire star is blown apart

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Definitions:

Swiss Franc

The national currency of Switzerland, known for its stability and being a safe-haven currency in times of financial uncertainty.

Demand Curve

A graph showing the relationship between the price of a good and the quantity demanded by consumers at those prices.

Foreign Exchange

The global market for trading currencies, enabling the conversion of one currency into another.

U.S. Dollar

The currency unit of the United States, widely used globally in international trade and as a reserve currency.