A. comparing the fossil to other fossils found in rock layers in the same area
Explanation:
Relative dating is defined as the process of finding age of fossil in which a fossils approximate age is determined by comparing it to similar rocks or fossils of the same age.
In relative dating, scientist do not determine the exact age of the fossil but determine the relative age on the basis of the relevant rocks or fossils.
Hence, the correct answer is "A. comparing the fossil to other fossils found in rock layers in the same area".
We know that: mass = density x volume The volume of the total mixture is 0.1 m³ Let the first liquid be A and the second be B Mass Total = Mass A + Mass B
