At the time that Yellowstone National Park was created, there was a crucial factor that the park managers did not fully understand. What was that factor?

How the organisms depended on each other

Explanation:

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."