Persuade your reader to continue to protect or take a greater stand to protect clean air.

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."

the answer is c.) there is a warm front in region a and a stationary front in region b.

c. is the correct answer