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If two populations are reproductively isolated from one another (like certain populations of Russian warblers), they must be genetically isolated from each other and therefore cannot belong to the same species.
19-year-old Native American Male
Refers to an individual who is of Native American descent, aged 19.
Hopelessness
A feeling of despair or pessimism, believing that there is no possibility of a better future or solution to a problem.
Transition
The process or period of changing from one state or condition to another, often used in the context of careers, life stages, or writing.
Similarly
In a like manner or in a way that bears resemblance to another situation, process, or result.
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