... (lines 10 11 ) b The author says the investigation of geology brought reasoning into play (lines 14 15 ), meaning he had to develop his reasoning c Stratification means layers In lines 17 19 stratification ... logic, the development of hypotheses Lesson 17 : Judgment Calls Any time you make an inference, you are testing your ability to make sound judgment calls This lesson will also help you to evaluate ... Practice The following excerpt tells of a defining chapter in the life of a budding scientist (5) (10 ) (15 ) (20) (25) The voyage of the “Beagle” has been by far the most important event in my life,...