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Which of the following can be used as an indicator of the age of a moon's surface?
HIV
Human Immunodeficiency Virus, a virus that attacks the immune system and, if not treated, can lead to AIDS (Acquired Immunodeficiency Syndrome).
Conjugation
A form of genetic transfer where two bacteria temporarily join together and directly transfer genetic material between them.
Sex Pilus
A thin, tube-like structure used by bacteria to transfer genetic material during a form of reproduction called conjugation.
Transduction
The process by which sensory stimuli are converted into electrical signals in the nervous system.
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