Do you think homeostasis is necessary at the level of a single cell ?

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.

Vessels draining the myocardium of the heart, open primarily ,into which chamber?

The combining form leuk/o means red true or false