The second section presents the views andassumptions of realism in conducting research in social science. The main realistic attacks onlogical positivism approach are presented in the third section and the conclusion is given in thefourth section.
Water is considered 'the' universal solvent because more materials are dissolved by it than by any other solvent but it will not dissolve non-polar substances like oil.
Insoluble Tissues Water's high polarity makes it a very poor solvent for nonpolar molecules and, oddly enough, this is another important and useful quality. Certain body tissues should not dissolve readily. Things such as bone, hair, muscles and cell membranes would be useless if they dissolved in water.