The part of an experiment exposed to the variable under study.

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.

What organs comprise the respiratory system of a bird

What is the most important inorganic material for livings things? ! due tomorrow!