For number 19, please pick 1,2,3 or 4 as the answer. Thank you!

The correct answer is World War II in the Pacific

Explanation: Detailed in the map are all of the various battles that occurred in the Pacific during World War II including the dropping of the atomic bomb on Hiroshima and Nagasaki.

genetics is the study of how dna works, the methodologies defining the new recent technologies allow scientist to have a panoramic view of the entire dna landscape, especially how genomes interact with their environment, including off course, factors outside their organisms.

thus is very possible the existence of both scenarios, where populations of isolated individuals have different genetic traits, and share traits related to genetic mutation, due rats can easily travel overseas using human transport channels. so scientists could get a vast number of data, including human interaction, evolution of rodents, health development, spread of infections, development of new organisms, how genomes evolve in different environments and so on.

not sure but thinking i'ts cause the government was broke. not sure