[Solved] The total number of hours a person sleeps tends to _____ dramatically across the life span. A)decrease B)increase C)shift toward more morning sleep D)increase in REM Sexual Identity: The personal sense of one's own gender and sexual orientation, including how individuals perceive themselves and what they call themselves in terms of being attracted to other genders. Evolving Process: A process characterized by gradual changes and developments over time. Pornography: Visual or written content that explicitly depicts sexual acts or arousal for the purpose of sexual excitement, often controversial in terms of legality and morality. Contemporary Culture: The set of shared attitudes, values, goals, and practices that characterizes an institution, organization, or group in the present day.