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VICGeographyQuick questions
Unit 3: Changing the land
Quick questions on Climate change and land cover change: VCE Geography
2short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is the enhanced greenhouse effect in brief?Show answer
The natural greenhouse effect keeps Earth habitable: gases such as carbon dioxide and methane trap outgoing heat. Human activity has raised the concentration of these gases, strengthening the effect and warming the planet. This is the enhanced greenhouse effect, and land cover change is one of its drivers as well as one of its outcomes.
What are feedback loops?Show answer
The two-way relationship creates feedback loops that amplify change. The ice-albedo feedback speeds polar warming. Thawing permafrost releases stored carbon and methane, adding to warming that thaws more permafrost. A drying Amazon releases carbon while losing its capacity to absorb it.
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