Most of the Galaxies in the Local Group Are

question 37

Multiple Choice

Most of the galaxies in the Local Group are

• A) small irregulars like the Magellanic Clouds.
• B) active galaxies like Centaurus A.
• C) small spirals like M33 and the LMC.
• D) small ellipticals like the companions to M31 in Andromeda.
• E) big spirals like our Galaxy and M31.

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Definitions:

Marginal Output

The increase in output resulting from a one-unit increase in the level of input, while holding other inputs constant.

Variable Cost

Expenses that change in proportion to the activity or production level of a business; for example, costs for raw materials that increase as more goods are produced.

Rent

A payment made periodically by a tenant to a landlord in exchange for the use of land, a building, or another property.

Fixed Costs

Costs that do not change with the level of output in the short term, such as rent, salaries, and insurance.