+System behavior is the observable actions and emergent properties of a system, arising from the interactions of its constituent parts over time. It reveals how a system responds to internal [Feedback](/wiki/feedback) and external forces, a central study in [Systems Theory](/wiki/systems_theory).
+## See also
+- [Emergence](/wiki/emergence)
+- [Complexity](/wiki/complexity)
+- [System Dynamics](/wiki/system_dynamics)
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