Examlex
Stars are eternal and unchanging in your lifetime but not over a star's lifetime
Sex Ratio
The number of males per 100 females.
Males
Refers to the gender category in biological and societal contexts characterized by specific physiological, genetic, and often behavioral differences from females.
Females
Individuals of the sex that typically possesses the ability to bear offspring or produce eggs.
Population Density
The number of people per square mile.
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