D. Since (19,11) and (19,10) have the same x value, it fails the vertical line test
They learned the earth was much older than they had previously thought.
Gradual processes changed the earth's surface.
Fossils could tell the age they came from.
The difference between marginal cost and marginal revenue is Marginal cost is the money paid for producing one more unit of a good. Marginal revenue is the money earned from selling one more unit of a good. Thus the correct option is B.
<h3>What is the Marginal Revenue?</h3>
The difference in sales income or the additional income created by the seller when they produce and sell an extra unit of a good or service refers to marginal revenue.
When a change in the cost of production is observed when one additional unit of goods is being produced is refer as a marginal cost that appears from the additional output.
Therefore, option B is appropriate.
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The US abandoned its isolationist attitude
Answer:
<em>The continents that are spread out in an east-west direction such as </em><em>Eurasia</em><em>,</em><em>had</em><em> </em><em>a </em><em>developmental </em><em>advantage </em><em>b</em><em>e</em><em>cause </em><em>of </em><em>the </em><em>ease </em><em>with </em><em>which </em><em>crops,</em><em> animals</em><em>,</em><em>ideas </em><em>and </em><em>technologies </em><em>could</em><em> </em><em>spread </em><em>between</em><em> </em><em>areas </em><em>of </em><em> </em><em>similar </em><em>latitude</em><em>.</em>
