Sleep is an example.
Circadian rythms are biological processes that repeats itself within a certain time frame, as sleep repeats itself approximately once every day.
Answer:
Regulation, Control, Coordination, Growth, Nutrient, Nutrition, Homeotasis
Random fertilization allows random combination of genetic information, which helps synthesize genetically unique gametes. The fusion of a unique sperm together with a unique egg can introduce further variation.
I believe the correct answer is C
