circatidal - A rhythm synchronised with the tides., circalunar - A rhythm synchronised with the lunar cycle., circadian - A rhythm synchronised with a day., circannual - A rhythm synchronised with a year., nocturnal - A circadian rhythm where the organism is most active at night., diurnal - A circadian rhythm where the organism is most active during the day., crepuscular - A circadian rhythm where the organism is most active at dawn and dusk., flowering - An example of a circannual rhythm seen in daffodils., leaf fall - An example of a circannual rhythm seen in deciduous trees., migration - A circannual rhythm seen in some birds.,

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