What Was the Most Convincing Evidence That a Natural Nuclear

question 3

Multiple Choice

What was the most convincing evidence that a natural nuclear reactor formed two billion years ago in a uranium deposit in Africa?

• A)the relative depletion of ²³⁵U in the deposit
• B)the relative depletion of ²³⁸U in the deposit
• C)the relative abundance of lead in the deposit
• D)the isotopic distribution of neodymium in the deposit
• E)the appearance of radiation damage in the surrounding rock

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Definitions:

Gross Domestic Product

The total market value of all goods and services produced within a country in a specific time period.

Decreases

The reduction in size, number, or amount of something over a period of time.

Price Index

A statistical measure that examines the weighted average of prices of a basket of consumer goods and services, indicating trends in inflation and deflation.

Nominal GDP

The market value of all finished goods and services produced within a country in a year, measured using current prices without adjusting for inflation.