Why was the fugitive slave act so controversial?
it required all americans to return runaway slaves to their owners, and free states opposed this law.
it required all runaway slaves to be hung, and most people in free and slaveholder states were against this form of punishment.
fugitive slaves who were caught were sent back to africa, and southern states disagreed with this practice.
fugitive slaves were required to work twice as long before they could be freed, and northern states opposed this rule.

tearing down the berlin wall.

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.

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step-by-step explanation:

look at the x and y axis