The Northern Hemisphere receives more solar energy during one half of the year than it does during the other half of the year. Which of the
following happens during the year to explain this?

C

Explanation:

The Earth orbits the sun while rotating on its axis, meaning that the Sun hits some places at different times than others.

se

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."