| A | B |
| Who/what has the best chance of surviving the hardships of life? | Those with useful variations |
| What is another term for "survival of the fittest"? | The Principle of Preservation |
| What does Natural Selection ultimately lead to? | Improvement, Divergence, and/or Extinction of organisms |
| In Darwin's tree simile, what does the trunk of the tree symbolize? | Extinct organisms |
| What does Darwin refer to as "a truly wonderful fact"? | That all animals and plants are related. |
| Which does Darwin consider geological records to be, perfect or imperfect? | Imperfect |
| In dealing with the problem of intermediate forms, what does Darwin conclude as the most likely scenario? | There is no one intermediate form. |
| Complete this statement: "So...if we look to forms very distinct, for instance to the horse and tapir, we have no reason to suppose that links directly intermediate between them...." | "...ever existed, but between each and an unknown parent." |
| Despite the fact that there are seldom identifiable intermediate links between very early and present organisms, Darwin believes what? | There are common ancestors. |
| Darwin believes that the life of each species depends more on the presence of other already defined organic forms than on what? | Climate |
| Who wrote Principles of Geology? | Charles Lyell |
| What work does Darwin say has "produced a revolution in natural science"? | Principles of Geology |
| According to Darwin, how can one best gain some idea of past time? | Study sedimentary formations. |
| Complete this statement: "...man should examine for himself the great piles of super-imposed strata, and watch...." | The rivers bringing down mud, and the waves wearing away the sea-cliffs. |
| Who observed that "the extent and thickness of our sedimentary formations are the result and the measure of the denudation which the earth's crust has elsewhere undergone"? | Charles Lyell |
| According to Darwin, are our richest geological museums good, or are they poor sources of reliable information about the history of the earth? | Poor |
| To whom is Darwin referring: "The remark of that admirable paleontologist..."? | Edward Forbes |
| Complete this statement by Darwin: "I look at the geological record as a history of the world..." | imperfectly kept and written |
| According to Darwin, what portion of the earth, large or small, has been geologically explored? | Small |
| What is the major problem with records constructed from fossils? | Suspect because of inadequate data. |