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Why are star clusters helpful for testing our ideas of stellar structure and evolution?
Boredom
A state of feeling disinterested and unengaged with one’s current activity or surroundings.
Fear
An emotional response to perceived threats or danger, often resulting in a desire to avoid or confront the source of fear.
Parasympathetic
Pertaining to the part of the autonomic nervous system that conserves energy by slowing down the heart rate and increasing digestive and glandular activity.
Sympathetic
Relating to, or denoting the part of the autonomic nervous system that accelerates the heart rate, constricts blood vessels, and raises blood pressure or showing feelings of pity and sorrow for someone else's misfortune.
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