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Natural sciences contain all scientific materials dedicated to the study of nature. They are interested in the physical aspects of reality, unlike the social scientists who study human factors.
It is appropriate to mention five major sciences, namely: biology, physics, chemistry, geology and astronomy. Biology study the origin, evolution, and properties of human beings alive. In other words, it deals with phenomena related to living organisms. Medicine, zoology and botany are part of biology.
Physics is a natural science that focuses on the properties and interactions of matter, energy, space and time. The essential components of the universe are part of its field of action. Chemistry, on the other hand, focuses on the material: its composition, structure, properties and changes herself against any kind of reactions.
Geology analysis inside the Earth (material, change, structures, etc.). The hydrology, meteorology and Oceanography are sciences which can also register in the context of geology.
Then, astronomy is the science of celestial bodies. Astronomers study planets, stars, satellites and all the bodies and phenomena that lie beyond the land border.
Finally, there is noted that natural sciences are interested in what the nature brings. The human being, as a physical body, is studied by biology; However, its social dimension belongs to the social sciences (such as sociology, for example).