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What keeps the matter in an HII region ionized?
Fetal Movement
The motion or activity of a fetus within the womb, often detectable by the mother and an important indicator of fetal health.
Gestation Weeks
The period of time, measured in weeks, from conception to birth in pregnancy.
Behavioral Development
The study of how an individual's behavior changes and evolves over the course of their lifespan, influenced by a combination of genetic and environmental factors.
Low Birth Weight
The term used to describe babies weighing 5 pounds, 8 ounces (2,500 grams) or less at birth, whether or not they are premature.
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