Examlex
Why are smaller nuclei such as carbon-14 often radioactive? (carbon-12 is the most common and most stable form of carbon.)
Classes
Groups, collections, or categories of objects or individuals sharing common characteristics or attributes.
Properties
Characteristics or attributes that define or identify something, often used in the context of mathematics, physics, and philosophy.
Median
The middle value in a data set, which separates the higher half from the lower half.
American Kennel Club
A registry of purebred dog pedigrees in the United States, also known for promoting and sanctioning events for purebred dogs.
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