the last question i do not get can one of y´all help me out lisa is working on a science project her task is to answer the question ¨does rogooti(which is a commerical hair product) affect the speed of hair growth
science - bobpursley, Thursday, September 1, 2011 at 7:59pm
control group: untreated hair
independent variable: applicaton of rogooti or not
dependent variable: hair growth over time.