What are the physical limits of an ecosystem

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.

49 ! how are energy cycles and growth cycles related?

A. describe the scientific method, using pasteur's swan-necked flask experiment as an example.