GMAT Integrated Reasoning
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Source: PREP
Level: 4
The diagram shows, in three column groupings, various divisions of Earth's geological history since its formation approximately 4,600 million years ago. In the leftmost column grouping, the Precambrian eon is subdivided into chronometric eons shown on the far left; but otherwise, in the rest of the graphic, each subsequent column to the right shows the subdivisions of the timeframes to its left. Each of the rightmost two column groupings is a magnification—with additional information—of a portion of the grouping directly to its left.
Fill each blank using the drop-down menu to create the most accurate statement on the basis of the information provided.
The Miocene epoch spans closest to of the era of which it is a part.
According to the diagram the beginning of the marks the onset of a new eon, era, and period in geological history.