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Which Animal Became Numerous and Widespread by Using Sonar to Enable

question 52

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Which animal became numerous and widespread by using sonar to enable a high level of activity in the dark?


Definitions:

Total Revenue

The total amount of money received by a company for goods sold or services provided during a certain time period.

Marginal Revenue

The additional revenue that a company receives from selling one more unit of a good or service.

Downward-Sloping Demand

A common economic principle where the quantity demanded of a good or service decreases as its price increases.

Quantity Tax

A tax that is levied on the quantity of a good produced or sold, rather than its price.

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