How is variation in wild and domesticated species evidence for natural selection?

Ronald wants to see if a new shower cleaner works better in removing soap than his old cleaner. he uses the new cleaner on one half of the shower tiles and his old cleaner on the other half. identify the independent and dependent variables in this experiment. enter your answer in the space provided.

The science for classifying and naming organisms is known as

Scientific evidence is most likely to be consistent if it is based on data from