How would sound be affected if there was no matter to vibrate? The sound would have a higher pitch.

The sound would have a lower pitch.

The sound would be louder.

There would be no sound

There will be no sound.

Without vibration sound will not be produced.

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."