Research Methods in Environmental Science — DU B.Sc. (Hons.) Environmental Science Previous Year Question Papers

(iii) Terrestrial Support your answer with examples. (15) UNIVE " DELHI * Research (DSE-19) Sciences-Elective 1. Write short notes on any three of the following : (a) Exploratory and experimental research (c) Importance of hypothesis testing (d) Role of objectives in research design 2. Differentiate between any three of the following: (a) Analytical vs. descriptive research (b) Dependent and independent variables (c) Random sampling vs. stratified sampling (d) Atmospheric vs. terrestrial environmental research 3. (a) Outline the key steps in framing a research question in environmental science. (10) (b) How does a literature review help in hypothesis development? (5) 4. (a) Explain the significance of inferential statistics (t-test, ANOVA, correlation) in hypothesis testing. (10) (b) Describe a case study method applied in aquatic ecosystem research. (5) 5. (a) Describe the core principles of research ethics in environmental field studies. (10) (b) How can inappropriate data sampling affect research outcomes? (5) 6. Discuss the application of environmental research in any two of the following domains :