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Courses in the natural sciences include a wide range of specific topics, such as astronomy, geology, chemistry, physics, biology and anthropology. These courses can be found at both undergraduate and graduate levels, as part of degree programs, and for individual interest. View 10 Popular Schools Â».
natural science(noun) the sciences involved in the study of the physical world and its phenomena. natural science(Noun) A science involved in studying phenomena or laws of the physical world; a general term of physics, chemistry, biology, astronomy, and so on. Natural science. The natural sciences are those branches of science that seek to elucidate the rules that govern the natural world through scientific methods.