How would you describe the influence of mesopotamia's physical geography on the region? write an expository essay about how geography influenced the way people lived in mesopotamia. think about the tigris river and the euphrates river and the effect of flooding on the region. include information about how geography influenced the formation of city-states in your essay.

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.