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Bats and Marine Mammals Are Well-Known Examples of Animals That

question 47

Multiple Choice

Bats and marine mammals are well-known examples of animals that produce high-frequency sound waves beyond the range of human hearing. The high-frequency waves are used for echolocation, the process of emitting high-frequency sound waves and using both the time it takes for the waves to bounce back to the caller and the direction from which the waves return to the caller to locate distant objects. Research has shown that bats can send and receive sounds as high as 100,000 Hertz (Hz) .
On the other hand, some mammals, such as elephants and whales, produce extremely low-frequency sounds. For example, elephant calls range from 5 to 50 Hz. Low-frequency sounds have long wavelengths, which means they are less likely to be distorted or interrupted by features in the environment. In favorable weather conditions, low-frequency sound waves can be transmitted over several kilometers.
-What advantageous ability does the extended hearing range of elephants provide?

Definitions:

Time Preference

The economic theory that individuals prefer to receive goods or services sooner rather than later, all else being equal.

Federal Reserve

The central bank of the United States, responsible for monetary policy, regulation of financial institutions, and ensuring financial system stability.

Dividend Yield

A financial ratio that shows how much a company pays out in dividends each year relative to its stock price.

Annual Dividend

The total amount of dividend payments declared by a company in one year, distributed to shareholders from its earnings.