Weegy: The answer is constant and unique. User:
"Fish appear in the fossil record before amphibians." This statement is an example of _____.
absolute time Weegy: The answer is relative time.
Relative Time from it's Basic principles. As previously described in this book, geologists use some basic, simple principles to unravel which came first? User:
Biologists use molecular clocks to try to measure _____.
when a ... (More)