The correct answer would be B.) Theme Music.
I hope this answer helped you! If you have any further questions or concerns, feel free to ask! :)
Answer:
But mutation combined with one of the other mechanisms of evolution genetic drift natural selection nonrandom mating and gene flow can result in meaningful changes in allele frequencies in a population
Explanation:
have a nice day :)
B. More people move out than in
Celsius, people in Europe would use Celsius
