Please DON'T ANSWER THANK YOU...Samuel Morse helped spark a revolution in communications. Which statements describe one of
Morse's contributions?
Choose all answers which are correct.
The first telegraph line ran from Philadelphia, Pennsylvania, to New York City.
He invented the electric telegraph that transmitted information instantaneously.
He developed the semaphore system, thereby revolutionizing communications.
He devised a code of dots and dashes for sending messages over the wire.
Telegraph wires spread across the continent by following railroad tracks west.

Oy vey 300 Jews died during the Holocaust

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.

i would say your answer is a)

sorry if im wrong