title: Annual rhythms.
mesh_terms: D000220:Adaptation, Biological; D000818:Animals; D001522:Behavior, Animal; D001717:Birds / Q000502:physiology*; D002940:Circadian Rhythm; D005399:Fishes / Q000502:physiology*; D008027:Light; D008322:Mammals / Q000502:physiology*; D010507:Periodicity; D018521:Plant Physiological Phenomena; D012098:Reproduction; D009626:Terminology as Topic; D013995:Time