5. In paragraph 2, Thoreau states, "We do not ride on the railroad; it rides upon us." Which of the following
statements best explains the figurative language used in
this quote?
A. Thoreau grieves for those whom the railroad industry
has taken advantage of, specifically those who died
while building it.
B. Thoreau predicts the end of small business
craftsmanship in the face of an increasingly
industrialized world represented by the train.
C. Thoreau comments on how aspects of modern life,
such as the train, control the lives of the people who
use them, rather than the other way around.
D. “Thoreau denounces the use of public transportation,
arguing that is pointless if it cannot take one exactly
where one chooses.
(Except from walden)

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 think the answer's are a) b) and c)