Related Topics  Biology (Encyclopedia of Science)   Biology is
composed of many fields, including microbiology, the study of
microscopic organisms such as viruses and bacteria; cytology,
the study of cells; embryology, the study of development;
genetics, the study of heredity; biochemistry, the study of the
chemical structures in living things; morphology, the study of
the anatomy of plants and animals; taxonomy, the identification,
naming, and classification of organisms; and physiology, the
study of how organic systems function and respond to
stimulation. Biology often interacts with other sciences, such
as psychology. For example, animal behaviorists would need to
understand the biological nature of the animal they are studying
in order to evaluate a particular animal's behavior.  History of
biological science  The history of biology begins with the
careful observation of the external aspects of organisms and
continues with investigations into the functions and
interrelationships of living things.  The fou