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Only a hot, thin gas can produce an emission line.
Heart Attack
A medical condition caused by the obstruction of blood flow to the heart, leading to heart muscle damage.
Competitive
Having a strong desire to compete or to be better than others, often characterized by pursuits to surpass others or achieve superiority.
Type A Personality
A personality trait characterized by high levels of competitiveness, impatience, and a sense of urgency, often linked to stress and heart disease.
Ambitious
Having a strong desire for success or achievement; aspiring to attain great heights in one's endeavors.
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