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EnglandGeography

Component 2: Global Systems and Global Governance

5 dot points across 5 inquiry questions. Click any dot point for a focused answer with worked past exam questions where available.

How does the carbon cycle regulate climate, and what feedbacks amplify or dampen change?

The role of the carbon cycle in the greenhouse effect and the Earth's energy balance; positive and negative feedbacks; and strategies to mitigate climate change.
An Eduqas A-Level Geography answer to the link between the carbon cycle and climate in Component 2, covering the greenhouse effect and the Earth's energy balance, the enhanced greenhouse effect, positive and negative feedbacks, tipping points, and mitigation and adaptation strategies, with case studies.
13 min answer →

How are the water and carbon cycles linked, and why does coupling them matter for the climate system?

The links and interdependence between the water and carbon cycles; their joint role in the climate system; and how a change in one cycle propagates to the other.
An Eduqas A-Level Geography answer to the coupling of the water and carbon cycles in Component 2, covering how the two cycles are linked through vegetation, oceans and the atmosphere, their joint role in regulating climate, ocean acidification, and how a change in one cycle propagates to the other, with examples such as the Amazon.
12 min answer →

How does the drainage basin operate as an open system, and how do human actions disturb it?

The drainage basin as an open system; the water balance; storm hydrographs; and the impact of land-use change, abstraction and climate change on the basin.
An Eduqas A-Level Geography answer to the drainage basin system in Component 2, covering the basin as an open system, the water balance equation, inputs, stores, flows and outputs, storm hydrographs and their controls, and the impact of land-use change, abstraction and climate change, with examples and KaTeX statistics.
13 min answer →

How does the global carbon cycle operate, and how do human activities change it?

The global carbon cycle as a system; its major stores and fluxes; the fast and slow carbon cycles; and the human modification of the cycle through combustion and land-use change.
An Eduqas A-Level Geography answer to the global carbon cycle in Component 2, covering the major stores (lithosphere, oceans, atmosphere, biosphere), the fluxes (photosynthesis, respiration, decomposition, combustion, sequestration), the fast and slow carbon cycles, and human modification through fossil-fuel combustion and land-use change, with case studies.
13 min answer →

How does the global water cycle operate as a system, and why does water insecurity arise?

The global water cycle as a system; its major stores and fluxes; the global water budget; and the causes and consequences of water insecurity.
An Eduqas A-Level Geography answer to the global water cycle in Component 2, covering the major stores (oceans, cryosphere, atmosphere, groundwater, biosphere), the fluxes and transfers, the global water budget, residence times, and the causes and consequences of water insecurity, with case studies.
13 min answer →