In science, the term natural science refers to a naturalistic approach to the study of the universe, which is understood as obeying rules or laws of natural origin.
The term natural science is also used to distinguish those fields that use a scientific method to study nature from the social sciences, which use a scientific method to study human behavior and society; from the formal sciences, such as mathematics and logic, which use a different (a priori) methodology and from the humanities.
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