What did Harriet Beecher Stowe do that increased tensions between the North and the South? A. She wrote a novel that aroused compassion for enslaved people.

B. She helped organize the Underground Railroad and "conducted" slaves to freedom.

C. Her escape resulted in the "Christiana Riot" in the state of Pennsylvania.

D. She wrote a novel about her escape from slavery and journey to the North.

A

Explanation:

chlorofluorocarbons are released via: aerosol sprays and refrigerants.

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.