Which crustal features form at convergent boundaries? A. Mid-ocean ridges, rift valleys, and faults
B. Mountains, volcanoes, and mountain ranges
C. Mid-ocean ridges, volcanoes, and faults
D. Mountains, rift valleys, and faults

idk

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."

the form of energy changes and the total energy increases0l