posted by Morgan .
i am in 9th grade biology and i am REALLY confused about the difference between controll variable, responding variable, manipulated variable and controll group. any help would be great. i have a test TOMORROW!!!!
Because the title of the post is Biology, the first definition is from a Biological dictionary:
2. (this one seems easier = look at Main Entry): http://dictionary.reference.com/browse/control+variable&
When there are words you do not understand, never forget a good dictionary!