Did you notice that the responses seem a bit contradictory? My best advice: ask the teacher who assigned the thesis about preference. Deductive preference: place your thesis in your opening sentence. Inductive preference: place your thesis in your first paragraph's closing sentence. Either way...
Answers by Gary M.
what is hydrology (answer)
Hydrology is the study of the the water cycle. Included are details about oceans, aquifers, rivers and lakes. The science deals primarily with evaporation, cloud formation, condensation, and precipitation. For more info, check Wikipedia.