Answer:
The options are
Complex
Identical
Inconsistent
Non-testable
The Answer is Identical
Explanation:
The groups of scientists in different parts of the world who are dating fossils found in a rock layer of the same geologic time period. The findings have to have some common characteristics which links it to being in the same geologic time period.
This however validates the fossils having to be identical to match those found in other parts of the world.
Any change in allele frequencies in a gene pool is a mutation
It can cause bacteria in bacteria can cause diseases
Well all these signs indicate that the person is having a panic attack,which is an indicator of anxiety disorder