Anything written about about an issue/person after the fact is a source a. primary b. secondary

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.

2polnis which of the following is an advantage of an in vitro experiment?me

Which of th following best describes how genes produce traits in an organism?