What did irrigation allow people to accomplish? a. protection from violent nomads b. delivering water to dry areas for growing crops c. passing knowledge from one generation to another d. the invention of the wheel

Mid to high level clouds that look like layered blankets are called

What was v-e day? a. victory in england day b. victory in europe day c. victory in japan day d. victory every day

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?