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Copulate Definition & Meaning - Merriam-Webster
Copulation (zoology) - Wikipedia
This timeless piece of “body art” of people having sex in an …
Sexual intercourse | Description & Facts | Britannica
Mating - Wikipedia
Human reproduction - Wikipedia
14.6 Human procreative copulation – The Evolution and Biology …
Human Copulation | SpringerLink
sexual intercourse summary | Britannica
Copulation - an overview | ScienceDirect Topics