Starburst Galaxies

question 52

Multiple Choice

Starburst galaxies

• A)contain a large number of very young stars, but very little evidence of gas clouds.
• B)contain a large number of very old stars and almost no gas or dust.
• C)are often associated with a galaxy that is colliding with another galaxy.
• D)are common in rich clusters.
• E)are composed of filaments and voids.

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Definitions:

Marginal Expenditure

The supplementary cost resulting from acquiring an extra unit of a good or service.

Economic Rent

Economic rent is the excess payment made to or received by a factor of production over and above what would have been needed to bring that factor into production.

Competitive Factor Market

A market for inputs where firms purchase resources necessary for production, characterized by many sellers and buyers.

Inframarginal Workers

Employees whose productivity and wage are above the minimum required for employment, but are not the highest performers.