Interrelations between biological rhythms and clocks.
D000375:Aging; D000818:Animals; D001272:Atmosphere; D001683:Biological Clocks; D001717:Birds / Q000502:physiology; D001831:Body Temperature; D002940:Circadian Rhythm; D004574:Electromagnetic Fields; D055590:Electromagnetic Phenomena; D005843:Geography; D006801:Humans; D008029:Lighting