If a system has a continuous symmetry property then there are corresponding quantities whose values are conserved in time.
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Lara Garotti, Macleod, VIC; Naomi Aravena-roman, North Fremantle, WA; Edith Spiers, Woodend, VIC; Rebecca Schacht, North Bondi, NSW; Aleksandar Milosev, Bulimba, QLD.