Which of the following is an example of the Columbian Exchange? The division of South America between Portugal and Spain
b. The Introduction of tomatoes to Europe from the Americas
The king of Spain's gift of ships for Columbus expedition
The offer to Columbus of a share of the wealth he discovered

Which of the following statements describes the effect of increased internet usage on reporting

Which controversial political issue of the 1920 is reflected in the cartoon

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?