Welcome to your weekly deep dive into the most critical subjects for the UPSC Civil Services Examination. This edition focuses on the dynamic intersection of Environment and Geography, two areas where static knowledge must constantly be updated with evolving current affairs. We will unravel the complexities behind recent newsmakers like Glacial Lake Outburst Floods (GLOFs) and the historic Biodiversity Beyond National Jurisdictions (BBNJ) Treaty, equipping you with the analytical edge needed for Prelims and Mains.
The Critical Intersection of Environment, Geography, and Current Affairs
Success in the UPSC CSE is not merely about memorizing facts; it is about developing an interdisciplinary understanding of core issues. The syllabus for Environment and Geography is a prime example of this. Examiners frequently frame questions that link a geographical phenomenon, such as the melting of Himalayan glaciers, to its environmental impact, its implications for disaster management, and the international policies formulated to address it. Therefore, a candidate must be able to connect the dots between a physical process like glacial retreat and a diplomatic milestone like the High Seas Treaty. This quiz is designed to sharpen that very skill, helping you move beyond isolated information and towards integrated knowledge.
Understanding the Nuances: Glacial Lakes and the BBNJ Treaty
Recent events have brought Glacial Lake Outburst Floods (GLOFs) into sharp focus, particularly in the context of the fragile Himalayan ecosystem. A GLOF is a catastrophic release of water from a lake fed by glacier melt, capable of causing immense downstream devastation. Understanding the mechanisms of their formation, the impact of climate change on their frequency, and the national strategies for mitigation is non-negotiable for any serious aspirant.
Simultaneously, on the global stage, the adoption of the Biodiversity Beyond National Jurisdictions (BBNJ) Treaty, also known as the High Seas Treaty, marks a monumental step in oceanic governance. This legally binding instrument under the UN Convention on the Law of the Sea (UNCLOS) aims to conserve and sustainably use marine biodiversity in areas that constitute nearly two-thirds of the world’s oceans. Its provisions on marine protected areas, environmental impact assessments, and benefit-sharing from marine genetic resources are crucial topics for the examination.
Why This Is a High-Yield Area for UPSC and Other Exams
Topics like GLOFs and the BBNJ Treaty are considered high-yield because they test a candidate’s grasp on multiple fronts. A question on GLOFs can touch upon physical geography, climate change (GS Paper 1 and 3), disaster management (GS Paper 3), and government policies. Similarly, a question on the BBNJ Treaty assesses your knowledge of international environmental law, international relations (GS Paper 2), and marine ecology (GS Paper 3). By mastering these interconnected themes, you are effectively preparing for a wide spectrum of potential questions, thereby maximizing your scoring potential in competitive exams like UPSC, SSC, and various State PSCs.
UPSC Prelims Practice Quiz: Test Your Understanding
Question 1: Consider the following statements regarding Glacial Lake Outburst Floods (GLOFs):
1. They are exclusively caused by the sudden failure of moraine dams that contain glacial lakes.
2. An increase in global average temperatures is directly linked to a higher risk of GLOF events in high-mountain regions.
3. The National Disaster Management Authority (NDMA) has issued guidelines that focus solely on post-disaster relief and rehabilitation for GLOFs.
Which of the statements given above is/are correct?
(a) 1 and 2 only
(b) 2 only
(c) 1 and 3 only
(d) 1, 2 and 3
Answer: (b) 2 only
Explanation: Statement 1 is incorrect because GLOFs can also be triggered by other factors like avalanches or rockfalls into the lake, causing a displacement wave, not just dam failure. Statement 3 is incorrect as NDMA guidelines are comprehensive, emphasizing risk reduction, monitoring, and the development of early warning systems, not just post-disaster response. Statement 2 is correct because rising temperatures accelerate glacier melt, increasing the volume of water in glacial lakes and destabilizing the surrounding moraines, thus elevating the risk of a breach.
Question 2: The recently adopted ‘Biodiversity Beyond National Jurisdictions (BBNJ) Treaty’ is significant primarily because it:
(a) Aims to establish a framework for the conservation and sustainable use of marine life in the high seas.
(b) Replaces the United Nations Convention on the Law of the Sea (UNCLOS) with new maritime laws.
(c) Grants coastal nations sovereign rights over the genetic resources found in the high seas.
(d) Exclusively deals with the regulation of deep-sea mining activities.
Answer: (a) Aims to establish a framework for the conservation and sustainable use of marine life in the high seas.
Explanation: The BBNJ Treaty, or High Seas Treaty, is a landmark agreement under the framework of UNCLOS. Its primary objective is to manage and protect marine biodiversity in areas beyond national jurisdiction, which covers the high seas. It does not replace UNCLOS (b) but rather complements it. It promotes fair and equitable benefit-sharing, not sovereign rights for coastal nations (c), and while it touches upon activities that impact biodiversity, its scope is broader than just deep-sea mining (d).
Question 3: With reference to the impact of climate change on the Himalayan river systems, which of the following is the most accurate long-term consequence?
(a) A permanent and sustained increase in the annual water flow of rivers like the Ganga and Brahmaputra.
(b) An initial increase in water flow due to accelerated glacial melt, followed by a significant long-term reduction.
(c) A complete cessation of water flow in all Himalayan-fed rivers within the next century.
(d) No significant change in the water flow, as monsoon rainfall is the sole determinant of river volume.
Answer: (b) An initial increase in water flow due to accelerated glacial melt, followed by a significant long-term reduction.
Explanation: This phenomenon is often termed ‘peak water’. Initially, as glaciers melt faster due to warming, river flows increase. However, as the glacial ice reserves deplete over time, this source of water will diminish, leading to a substantial reduction in river flow, especially during the dry seasons. This poses a severe long-term threat to water security for millions.
Question 4: The principle of ‘Common Heritage of Mankind’ is most closely associated with the governance framework of which of the following?
(a) The resources of the deep seabed in areas beyond national jurisdiction.
(b) The biodiversity within a nation’s Exclusive Economic Zone (EEZ).
(c) The conservation efforts under the Ramsar Convention on Wetlands.
(d) The trade regulations established by the CITES treaty.
Answer: (a) The resources of the deep seabed in areas beyond national jurisdiction.
Explanation: The United Nations Convention on the Law of the Sea (UNCLOS) established that the resources of the international seabed area (the Area) are the “common heritage of mankind.” This means they cannot be claimed by any single state and should be managed for the benefit of all humanity, a principle overseen by the International Seabed Authority (ISA).
Question 5: Which of the following represents a key structural measure for the mitigation of risks from a potential Glacial Lake Outburst Flood (GLOF)?
(a) Conducting awareness campaigns in downstream villages.
(b) Establishing a satellite-based early warning system.
(c) Controlled breaching and lowering of the lake’s water level through siphoning or creating a channel.
(d) Preparing and rehearsing a community-based evacuation plan.
Answer: (c) Controlled breaching and lowering of the lake’s water level through siphoning or creating a channel.
Explanation: While options (a), (b), and (d) are crucial non-structural mitigation measures related to preparedness and early warning, option (c) is a direct structural engineering intervention. It physically reduces the hydrostatic pressure on the moraine dam by lowering the lake’s volume, thereby decreasing the probability of a catastrophic failure.
