Cold, dense water with high salinity sinks as it moves toward the equator. as it is heated, it becomes less dense and rises, moving water back toward the north pole. this describes which type of ocean current
a) surface
b) convenction
c) deep-water
d) el niño

answer; i believe the correct answer is (replication is not conservative);

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."