[Solved] Generalist species are more prone to extinction when environmental changes change rapidly than specialist species. Genital Arousal: The physiological response of the genital organs to sexual stimulation, leading to increased blood flow and readiness for sexual activity. Plateau: A phase in which progress in physical or intellectual skills seems to halt temporarily after a period of rapid improvement. Premature Ejaculation: A sexual disorder in males characterized by ejaculation that occurs sooner than desired, either before or shortly after sexual penetration. Erotic Plasticity: The degree to which an individual's sex drive can be changed by societal, situational, and cultural influences.