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Studies non-living systems “Physical science is the study of non-living things and the laws that describe them,” as noted by BRANCHES OF SCIENCE. Subcategories include Physics (matter and energy), Chemistry (composition and properties of substances), Astronomy (celestial bodies), and Earth Sciences like Geology (rocks and the Earth's crust) and Meteorology (weather).
Studies living organisms “Life science, as the name suggests, is the study of living things,” as noted by Study.com. Key subcategories include Biology (general life processes), Botany (plants), Zoology (animals), Microbiology (microscopic organisms), and Genetics (heredity).
Geology is a branch of natural science concerned with the Earth and other astronomical bodies, the rocks of which they are composed, and the processes by which they change over time.