In biology, a biological life cycle (or just life cycle or lifecycle when the biological context is clear) is a series of changes in form that an organism undergoes, returning to the starting state.

The menstrual cycle, long considered a simple biological process, turns out to be a complex phenomenon influencing many ...

The myaamia traditional calendar, myaamia kiilhswaakani, observes the lunar cycle that follows the biological and seasonal cycles of any given year. These biological cycles are reflected in the month ...

Getting a good night's sleep is a critical part of our daily biological cycle and is associated with improved brain function, a stronger immune system, and a healthier heart. Conversely ...

The IAEA Environment Laboratories apply nuclear and isotopic techniques to better understand the carbon cycle, to evaluate the ocean’s ... Through one of the primary carbon storage mechanisms, the ...