Why Do the Patterns of the Stars in Our Sky

question 85

Multiple Choice

Why do the patterns of the stars in our sky look the same from year to year?

• A)because the stars in the constellations move so slowly- typically about the speed of a snail- that their motions are not noticeable
• B)because the stars in the constellations are not moving
• C)because the stars in the constellations are so far away
• D)because the stars in the constellations all move at the same speeds and in the same directions, so they don't change their relative positions

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Definitions:

Ectopic Focus

This term denotes an abnormal cluster of cardiac cells that generates heartbeats at an irregular rate or rhythm, different from the heart's primary pacemaker.

Respiratory Rate

The number of breaths taken per minute, a vital sign indicating breathing efficiency and metabolic activity.

Sinus Arrhythmia

A normal variation in heart rate that occurs with breathing, increasing during inhalation and slowing during exhalation.

Ventricular Tachycardia

A heart rhythm disorder characterized by a fast heart rate that originates from the ventricles, potentially leading to serious cardiac issues.