As Much as 90% of the Matter in the Universe

question 118

Multiple Choice

As much as 90% of the matter in the universe may be unseen "dark matter." Where is this dark matter?

• A) It seems to be rather uniformly distributed throughout the universe.
• B) It is concentrated in the centers of galaxies,and may,in fact,be related to black holes at galactic centers.
• C) It is concentrated in the planes of galaxies,but extends far beyond the visible galactic plane.
• D) It appears to be concentrated in spherical haloes around galaxies,but extends several times the radius of visible matter.

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Definitions:

Tax Policy

Government guidelines that determine the collection and management of taxes within a jurisdiction, affecting how wealth is distributed among the population.

Production Possibilities Frontier

A curve demonstrating the maximum achievable output levels for two or more goods, given a set of inputs and technology.

Opportunity Cost

The avoiding of potential profits from alternative choices by settling on one.

Prairie Dog

A small burrowing rodent found in the grasslands of North America, known for its complex social structures and communication methods.