Identify the independent (manipulated) and dependent (responding) variables in a scientific investigation. Draw conclusions about the relationship between two variables using quantitative data.
Researchers at the University of Illinois have found a simple solution to a problem that has plagued scientists for decades: the tendency of chemical buffers used to maintain the pH of laboratory ...
American Journal of Botany, Vol. 13, No. 10 (Dec., 1926), pp. 743-753 (11 pages) 1. Use was made of the method of determining isoelectric points for plant tissue which consists in placing pieces of ...
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