Complex sentence: The book mixed science with a scientifically enhanced reading of Genesis and lists geological discoveries that showed that men existed before Adam had been created and that Earth was much older than the 6000-year-old span of the Adamic race.
Split into simpler sentences: The book mixed science with a scientifically enhanced reading of Genesis. It lists geological discoveries which showed that men existed before Adam had been created and that Earth was much older than the 6,000-year-old span of the Adamic race.