Answer:
Circadian rhythm, or circadian clock, is an internal biological clock that regulates sleeping and feeding patterns, as well as a whole host of other biological functions in all living organisms. Organisms most active in the daytime are diurnal, humans included, whereas nocturnal organisms come alive at night.
Who or Whom Did You See? Even though you often hear who did you see in everyday conversations, the most grammatically correct answer is whom did you see. Whom refers to the object of the preposition or verb in a sentence.
1 I think but I really don’t understand the question sorry if I’m wrong
