How did abolitionists react to the Kansas-Nebraska Act? They praised popular sovereignty as the best way to end slavery and encouraged others to support it.
They set up a society to encourage people to move there so they could vote against allowing slavery.
They vilified Stephen Douglas as a Southern sympathizer, ruining his reputation and political future.
They claimed that it would lead to violence and suggested that anti-slavery settlers leave the area.

Some organisms have a large geographic range. for example, the norway rat lives on every continent except antarctica. a population of norway rats is the number of rats in one particular area. do you think it’s scientifically possible for a population of norway rats in north america to carry different genetic mutations than a population of norway rats in africa? do you think it’s possible that they carry some of the same mutations? what types of information can scientists learn by studying the genomes of these two populations of rats?