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The presentation of basic scientific facts from chemistry, biology, physics, and psychology. However, it also includes teaching the scientific method to high schools students so that they can familiarize themselves with how science works at all.
Families that experience unemployment and poverty over several generations are the underclass.
These are the people who occupy the lowest classes and are frequently jobless and and or in poverty - this also denotes the families in question.
A method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.
