How Can You Tell from the Apparent Polar Wandering Curves

question 61

Multiple Choice

How can you tell from the apparent polar wandering curves for Eurasia and North America, when they were last together and had just started to drift apart?

• A) more than 500 million years ago, because the curves are separated then
• B) just recently, when the curves came together
• C) about 300 million years ago, because the curves really bend before that
• D) about 200 million years ago because, for times older than that, their curves remain parallel and about the same distance apart

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Definitions:

Natural Monopoly

A market situation in which a single company can provide goods or services at a lower cost than any competitor, often due to economies of scale.

Average Total Cost

The total cost of production divided by the number of units produced, used to analyze cost behaviors in economics.

Producer Surplus

The difference between the amount producers are willing and able to sell a product for and the actual amount they receive, often representing profit.

Total Surplus

The total net gain for society derived from the creation and utilization of goods or services, calculated as the combined value of consumer and producer surplus.