Answer:
Radiometric dating.
Explanation:
Absolute dating is the scientific process of finding out the age of an object or artifact by anthropologists.
Radiometric dating is much like absolute dating but it uses parent isotopes to measure and determine age of rock particles
Metaphorically:
Having a low population is like vey
much like flipping a coin once
(think of the coin as genetics)
and
Having a large population is like
flipping a coin multiple times
D. Holding your nose
Your sense of smell is a big part of your taste, which is why it helps to plug your nose when eating something bad.