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A Stratigraphic Layer in One Location Overwhelmingly Represents One Species

question 31

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A stratigraphic layer in one location overwhelmingly represents one species, while the same species is discovered in a similar stratigraphic layer hundreds of kilometers away.What method is used to provide an estimate of age for this layer and this species?


Definitions:

Natural Rate

The level of unemployment or interest that exists when an economy is balanced, not affected by short-term fluctuations or cyclical, structural factors.

Price Level

The combined average cost of all goods and services manufactured within the economy.

Deflation

A decrease in the general price level of goods and services, often indicating an economy in contraction.

Aggregate

A total or sum, often used in economics to describe combined quantities like total output or income.

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