Examlex
The production of large numbers of neutrons in nuclear reactions at the core of a massive star helps rob the core of energy and speeds its eventual collapse.
Developed Countries
Nations with relatively high levels of economic wealth and standard of living, often characterized by strong infrastructure, education systems, and healthcare.
Puberty
The developmental period in which children's bodies undergo physical and hormonal changes, enabling reproductive capabilities.
Risky Sexual Behaviors
Actions related to sexual activity that increase the risk of unwanted pregnancies, sexually transmitted infections (STIs), and other health complications.
Mixed-Gender School
An educational institution where both male and female students study together in the same environment.
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