Even Though Each Item on the Distance Ladder Is Only

question 33

Multiple Choice

Even though each item on the distance ladder is only effective within a certain distance range, the concept is still effective because

• A) each technique produces exact distances on its own.
• B) the distance ladder concept can be verified by looking in different wavelength ranges.
• C) each step can be calibrated through its overlap with the previous step.
• D) distances are ultimately relative, and not absolute.
• E) the time delay due to light travel time is significant enough to limit the accuracy of distance measurements anyway.

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Definitions:

Uncontrollable Sleepiness

A condition characterized by an overwhelming urge to sleep at inappropriate times, despite adequate rest.

Sleep Disorder

A medical disorder of the sleep patterns of a person or animal, which can interfere with physical, mental, social, and emotional functioning.

Sleep Apnea

A sleep disorder marked by pauses in breathing or periods of shallow breathing during sleep, leading to disrupted sleep and other health issues.

Breathing While Asleep

The automatic process of respiration during sleep, which includes both inhaling and exhaling air to provide oxygen to the body and remove carbon dioxide.