Quasars

question 115

Multiple Choice

Quasars

• A) are more common in nearby clusters of galaxies and less common in distant clusters of galaxies.
• B) are rare in the Local Group, with only one or two examples.
• C) increase in number as redshift increases, a relationship that persists to the highest redshifts astronomers can measure.
• D) peaked in number about 2 billion years after the Big Bang.

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Definitions:

Productivity

A measure of the efficiency of production, often calculated as the ratio of output to inputs used in the production process.

Goods and Services

The output produced by economic systems, where goods are physical items and services are intangible activities provided to consumers.

Human Capital

The capabilities, understanding, and expertise that an individual or group holds, considered in relation to their worth or expense to a company or nation.

Physical Capital

Assets used in the production process that are tangible in nature, such as machinery, buildings, and vehicles.