Answer:
to know what you're talking about
Each person’s DNA is unique.Scientists use variable regions in DNA to create DNA profile.<span>DNA samples can be taken from blood, bone, hair, or other body tissues and
products.</span>DNA from a crime scene can be compared to DNA from a suspect.DNA typing can be used to solve old cases. this is what you need to write.
C. The presence of predators could cause natural selection because it would mean survival of the fittest.
