D doratheexplora New member Dec 16, 2010 #1 I'm doing a science project in 7th grade about which cleansing product works best on a mirror. How would i count the bacteria? Would i use centimeters squared? I have no idea!
I'm doing a science project in 7th grade about which cleansing product works best on a mirror. How would i count the bacteria? Would i use centimeters squared? I have no idea!