Final answer:
Before Darwin, the common belief was that species were created at the same time and never changed. However, ancient Greeks and some scientists had expressed evolutionary ideas.
Step-by-step explanation:
Before Darwin, the common belief about species and humans was that all species were created at the same time and remained unchanged thereafter. This belief was grounded in the idea that the world was only about 6,000 years old and that organisms never change or go extinct. However, there were ancient Greeks who expressed evolutionary ideas, and some scientists, philosophers, and researchers had suggested and debated species change over time.