CSS Environmental Sciences Past Paper 2022
PART-2(Subjective) 80 Marks
Attempt ONLY FOUR Questions from PART-II. (20×4)
PART-II
Q2 Why are environmentalists interested in wetlands? Describe various mechanisms for sustainable management of wetlands in Pakistan.
Q3 Write in detail the history and main features of the Indus Water Treaty with a special focus on its significance in the current scenario of water stress in Pakistan.
Q4 What is anaerobic degradation? Describe the four key stages in the anaerobic degradation of organic waste.
Q5 What are the potential environmental impacts of the China-Pakistan Economic Corridor (CPEC)?
Q6 If the population of the top carnivores declines, what will happen to the landscape ecosystems?
Q7 What is the ozone layer? Explain its depletion resulting from atmospheric NO, H, OH, and Cl.
Q8 Write short notes on any four of the following:
- GIS and RS
- Biodiversity loss
- Atmospheric smog
- Population
- Air pollution
- Greenhouse gases