Chapter15 evolution(darwin)
Evolution.ppt nelson
Evolution primary sources
Recall that biologists define a species as a group of organisms that breed with one another and produce fertile offspring. Members of the same species.
Natural Selection. I have called this principle, by which each slight variation, if useful, is preserved, by the term Natural Selection. — Charles Darwin.
16.3
Evolution Standard: SB5d EQ: How does natural selection lead to a change in a species?
