Examlex
If an igneous rock is heated, which mineral melts first according to Bowen's reaction series?
Concrete Operational
A stage in Piaget's theory of cognitive development (typically age 7-12) where children gain the ability to think logically about concrete (physical and visible) events.
Ejaculation
Ejaculation is the discharge of semen from the male reproductive tract as a result of sexual arousal.
Menstruation
The monthly shedding of the uterine lining in females, accompanied by bleeding, marking a key component of the menstrual cycle.
Menarche
The occurrence of the first menstrual cycle in a female, marking the onset of reproductive capability.
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