Examlex
What is the symbol for the ion with 19 protons and 18 electrons?
Prenatal Development
The development and growth sequence inside the womb from the time of conception until birth.
Zygote
The initial cell formed when two gamete cells are joined by means of sexual reproduction; the earliest developmental stage of the embryo.
Fetus
The developing human organism from 9 weeks after conception to birth.
Anxious Children
Children who experience higher than normal levels of anxiety and fear, affecting their daily functioning.
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