Geologists know that radioactive dating methods are valid
A) because they are consistent with proposed theories.
B) because they have been compared with dates determined by other methods and have been found to correlate well.
C) because they have been compared with dates determined by other methods and have the same exact dates.
D) because the instruments always work well when performing laboratory tests.
Question 2
True or False: The major problem with geologic correlations is that some unconformities extend around the entire planet.
Indicate whether this statement is true or false.