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Biology · Class 9
Biology is the study of living organisms. It helps us explain how living things relate to one another and to their surroundings. The word "biology" comes from two Greek words: bios = life logos = thought, reasoning and study So, biology literally means "the study of life."
PracticeBiology has three main divisions: Botany, Zoology, and Microbiology. By dividing biology into a number of sub- fields, its study becomes convenient. Each sub-field focuses on a specific aspect of living organisms, such as their structure, function, development, classification, or environment.
PracticeBiology is not an isolated science; it is associated with other branches of science. The animals move, walk, or run on the principles of physics. The behaviour of atoms and molecules underlines and explains the behaviour of living cells. The physical structure of atoms and molecules determines their
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