When an industry was monopolized by one company or trust during the Gilded Age, what happened to workers’ wages? Workers often earned more because fewer businesses were competing for their services.
Workers often earned less because more businesses were competing for their services.
Workers often earned more because more businesses were competing for their services.
Workers often earned less because fewer businesses were competing for their services.

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?