Who made the first clear statement of the law of superposition? When?
A. John Wesley Powell, 19th century
B. William Smith, 18th century
C. John Stuart Priestly, 19th century
D. Nicolaus Steno, 17th century
Answer:D
Who made the first clear statement of the law of superposition? When?
A. John Wesley Powell, 19th century B. William Smith, 18th century C. John Stuart Priestly, 19th century D. Nicolaus Steno, 17th century