Which of the following is NOT a valid scientific method used by modern scientists to date fossils?
A Use of index fossils
B Relative position of fossils in rock strata
C Analysis of nitrogen-14 isotopes
D Analysis of Uranium-238 isotopes
A Use of index fossils
B Relative position of fossils in rock strata
C Analysis of nitrogen-14 isotopes
D Analysis of Uranium-238 isotopes