Environmental Indicators — DU B.Sc. (Hons.) Environmental Science Previous Year Question Papers

(Discipline Specific Elective -11) Semester -VIII (b)Explaintherelevanceofenvironmentalindicatorsinsustainabilityassessmentand public communication. (5) 2. Differentiate between the following: (5X3=15) (a) Air quality standards and air quality guidelines (b) Surface water indicators and groundwater indicators (c) Species richness and species diversity i i) (b) Environmental indicator reporting (c) Criteria air pollutants (d) Indoor air quality and health 4. (a) Explain major air pollution sources and emissions. (7) {b') Di;cuss the-health-effects of particulate matter, ozone, nitrogen oxides, sulfur dioxide, carbon monoxide, volatile organic compounds and lead. (8) 5. (a) Explain water pollution sources and pathways. (7) (b) Discuss dissolved oxygen, pH, temperature, turbidity, nutrients, chlorophyll-a, BOD, fecal colifoi.in bacteria and total dissolved solids as water quality indicators. (8) 6. Discuss climate change in.dicators with reference to greenhouse gas emissions, carbon dioxide concentration, global temperature, sea-level rise, ocean acidification, extreme weather events, glaciers, ecosystem productivity, species phenology and human health.