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Q.(a) Explain any three environmental concerns in global politics which no single government can address.

(OR)
(b) Explain the principle of 'common but differentiated responsibilities'.
CBSECBSE Class XII Board 2024Subjective· 6mImportance★★★★★
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Part (a): Global warming, ozone depletion, and pollution of the global commons with biodiversity loss are transboundary threats no single government can solve alone.

Part (b): CBDR recognises a shared duty to protect the environment but places the heavier, first burden on developed countries, giving developing countries flexibility and support.

Part (a)

Many environmental problems in global politics are, by their very nature, transboundary — they originate in one place but their effects spread across the whole planet, so no single government acting alone can address them. The first such concern is global warming and climate change. Greenhouse gases such as carbon dioxide released by industry, transport and deforestation anywhere accumulate in the shared atmosphere and raise temperatures everywhere, producing rising sea levels, melting glaciers, extreme weather and disrupted rainfall that ignore national frontiers; a single country cutting its emissions cannot stop a process driven by all. The second concern is the depletion of the ozone layer. Chemicals like chlorofluorocarbons emitted by some industrialised nations thin the ozone layer that shields the entire earth from harmful ultraviolet radiation, endangering people and crops far from where the gases were released, so protection requires all nations to phase out these substances together. The third concern is the pollution and over-exploitation of the "global commons" together with the loss of biodiversity. The oceans, the atmosphere, Antarctica and outer space lie outside any one country's jurisdiction, and marine pollution, overfishing and the destruction of forests and species diminish resources that belong to all humanity. Because these areas are owned by no single state, only cooperative international agreements can conserve them. In each case the problem is collective and the solution must be collective too. …

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