Wednesday, September 21, 2011

What are the contolled, independent, and dependent variables?

what are the independent, dependent and controlled varible in this experiement.



my paper says this:



Indivdual organisms must maintain a relitvely stable internal enviroments. both organisms and cell respond to many evironmental factors that otherwise would change their internal enviroment.



How do organisms maintain the pH of their tissues within a normal range despite activities that tend to change the pH? You begin to answer the question by comparing that response of a nonbiological material and a biological material to the addition of acid and a base. The nonbiological material is tap water and the biological material is one of severl species devrived from organisms.What are the contolled, independent, and dependent variables?
independent: pH environment

dependent:response of the material to the pH change

controlled: tap water, species usedWhat are the contolled, independent, and dependent variables?
when controlled,how can you have independence.you would only have dependence....right?

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