Astronomers Can Estimate Distances to the Galaxies in the Figure

question 44

Multiple Choice

Astronomers can estimate distances to the galaxies in the figure below because of

• A) the expansion of the universe.
• B) our location at the center of the universe.
• C) dark matter.
• D) peculiar velocities.
• E) gravitational redshift.

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Definitions:

Evolutionary Theory

A scientific theory that explains how biological organisms change over time through variation, inheritance, and the selection of traits that are advantageous for survival and reproduction.

Kin Selection

The evolutionary tendency to help people who have our genes.

Natural Selection

A process in evolutionary biology where individuals or species that are better adapted to their environment tend to survive and reproduce more than those less adapted.

Gene Investment Theory

A theory suggesting that individuals are genetically predisposed to invest resources in ways that maximize the passing of their genes to the next generation.