Pangaea Is Currently Dated at

question 173

Multiple Choice

Pangaea is currently dated at

• A) 4.6 billion years ago.
• B) about half the timespan of Earth's existence.
• C) 225 to 200 million years ago.
• D) 65 million years ago.
• E) the beginning of the Holocene.

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Definitions:

Opportunity Cost

Surrendering the chance for gains from other choices by opting for one path.

Machinery

Equipment, especially of a mechanical nature, used in the production process of goods.

Petroleum

A liquid that occurs naturally under the surface of the Earth, which can be processed into fuel and a range of chemical products.

Labor Productivity

A measure of economic performance calculated by dividing total output by the total number of hours worked.