Answer:
1. A
2. B
3. C
4. D
Explanation:
1. A William Smith made observations about the rocks, most changes on earth happen slowly, so the earth must be very old. Used direct observation.
2. B James Hutton helped develop the principle of fossil correlation; developed a stratigraphic map of England and Wales.
3. C Principle of Faunal Succession : states that specific groups of organisms have followed, or succeeded, one another in a definite sequence through Earth's history
4. D Uniformitarianism refers to the geological processes taking place on Earth today are the same as those of the past and can be used to explain past geological events