Sex

Sex, in biological terms, refers to the process by which organisms combine genetic material to produce offspring. In humans and many animals, sex typically involves the act of sexual intercourse, where male and female reproductive systems interact to allow fertilization. This process encourages genetic diversity and evolution. Sexual reproduction contrasts with asexual reproduction, where offspring arise from a single organism. Additionally, sex may serve social, emotional, and recreational purposes in many species, especially humans.
For more information, see the Wikipedia entry on Sex.