An equinox occurs when neither end of earth’s axis is tilted toward or away from the sun the north end of earth’s axis is tilted away from the sun earth’s axis is parallel to the sun’s rays the north end of earth’s axis is tilted toward the sun

neither end of Earth’s axis is tilted toward or away from the sun

Explanation:

neither end of Earth’s axis is tilted toward or away from the sun

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."