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Jack is a fervent believer in the idea that ancient astronauts colonized the Earth. After seeing an exhibit of moon rocks, Jack became convinced that one rock had traces of ancient hieroglyphics carved on its side and that another showed a crude diagram of a spaceship. The MOST likely explanation for Jack's conclusion is his:
Virus
A microscopic infectious agent that can replicate only inside the living cells of an organism, often causing disease.
Estrogen Level
The concentration of estrogen, a primary female sex hormone, in the body, which plays a crucial role in the development and regulation of the female reproductive system and secondary sex characteristics.
GnRH
Gonadotropin-releasing hormone, a neuropeptide that stimulates the production of gonadotropins, essential for reproductive functions.
Uterine Cycle
The monthly cycle of changes in the uterus, including menstruation, preparatory changes for potential pregnancy, and shedding of the uterine lining if pregnancy does not occur.
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