Guys! points + brainliest
which of the following elements is more reactive than the others?
calcium (ca)
magnesium (mg)
potassium (k)
sodium (na)

The other answer is wrong I took the test and I chose Mg or magnesium and I got it wrong I will add the correct answer into the comment box :)

Sodium or Na. Hope this can help

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."