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Why does luminosity increase with stellar mass on the main sequence?
Primary Sex Characteristics
The physical features present at birth and directly involved in human reproduction, such as ovaries in females and testes in males.
Menarche
The occurrence of the first menstrual period in a young woman, signifying the beginning of reproductive capability.
Parental Neglect
A form of child abuse where a parent or guardian fails to provide the basic needs or appropriate care for their child.
Early
Occurring or done before the usual or expected time, typically referring to a point in time closer to the beginning of a period or sequence.
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