Examlex
Which of the following is NOT one of the patterns of North American population movements?
Pheromones
Chemical signals released by an organism that influence the behavior or physiology of others of the same species.
Testosterone
A steroid hormone associated with the development of male secondary sexual characteristics and the regulation of libido in both men and women.
Oocytes
Female reproductive cells or egg cells that once fertilized by sperm develop into an embryo.
Sexual Excitement
The phase of the human sexual response cycle characterized by an increase in physiological and emotional arousal.
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