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Most stars on the main sequence fuse hydrogen into helium in their cores,but some do not.
Sociology
The study of social behavior, society, patterns of social relationships, social interaction, and culture.
Psychology
the scientific study of the human mind and its functions, especially those affecting behavior in a given context.
Threats
Potential sources of harm or adverse effects to something or someone.
Tension
The state of being stretched tight or mental or emotional strain.
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