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An example of probability sampling is
Conservation of Mass
A fundamental principle in physics stating that mass is neither created nor destroyed in a closed system through any chemical or physical transformation.
Conservation of Volume
A cognitive ability in child development where the child understands that the volume of a substance remains constant even if its appearance changes.
Class Inclusion
A concept in cognitive development referring to the ability to understand that a category can include smaller subcategories.
Subclasses
Categories that fall under a larger class, often sharing many characteristics with the class but having distinctive features.