Cell division usually occurs as part of a larger cell cycle. There are five stages to the waterspout life cycle. It works with estrogens in establishing the menstrual cycle. There are four processes in the Rankine cycle. Sulfonamides act on the schizont stages of the erythrocytic (asexual) cycle. Identity development is a stage in the adolescent life cycle. Preferences for voice pitch change across the cycle. Cancer cells have imbalance of signals in cell cycle. It was therefore vulnerable to the economic cycle. Their number varies according to the approximately 11-year solar cycle. Each channel has its own release cycle and stability level. Several variants of the staged combustion cycle exist. Amplifying devices operating in class A conduct over the entire range of the input cycle. A river is part of the hydrological cycle. Seasonal songs describe activities done in a particular agricultural cycle.