Martin’s home economics class is given the task of teaching a visiting group of 1st graders how to make food items. his group decides to teach how to make peanut butter and jelly sandwiches. knowing the level of their audience, what is the most important thing martin’s group can do to make their speech effective? a. speak slowly b. add a lot of humor c. adjust the level of complexity d. explain where peanut butter came from

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?