Evaluating responses is a high-order skill in VCE Geography. It requires applying criteria to judge whether a response has achieved its goals, at what cost, and with what side effects. VCAA specifically requires evaluation of effectiveness — not just description.
Before applying criteria, define what “effective” means in context. A useful framework:
| Criterion | Questions to Ask |
|---|---|
| Environmental effectiveness | Has the land cover change slowed, stopped, or reversed? |
| Scale | How much area has been protected or restored? Is it sufficient? |
| Cost-effectiveness | What is the cost per unit of outcome (e.g., per tonne CO₂, per hectare protected)? |
| Equity | Who benefits? Who bears costs? Are marginalised groups included? |
| Sustainability | Will the response continue without ongoing intervention? |
| Feasibility | Is it politically, technically and financially viable at scale? |
| Timeframe | How quickly does the response take effect? |
Effective in:
- Establishing universal political consensus on a temperature target
- Mainstreaming climate change into national policy in 196 countries
- Stimulating rapid growth in renewable energy investment (global solar capacity doubled 2019–2022)
Limited in:
- Current NDCs remain insufficient — UNEP Emissions Gap Report 2023 estimates 2.5–2.8°C warming on current policies
- No enforcement mechanism beyond reputational pressure
- Historical emissions have already committed the world to significant ice loss regardless of future action (“committed warming” from existing atmospheric CO₂)
- Climate finance (\$100 billion/year) has been inadequate and delivered inconsistently
Overall assessment: Partially effective. The Agreement represents the best available framework, and it has shifted investment flows and national policy, but the gap between pledged action and the 1.5°C target remains very large.
Effective in:
- Reducing summer ablation on covered sections by 50–70%
- Protecting ski resort infrastructure in the short term
Limited in:
- Extremely expensive (~€1–3 per m², applied to only small fractions of glaciers)
- Does not address the underlying cause
- Physically impossible at the scale of ice sheets
- Provides false reassurance — “buying time” without addressing root causes
Overall assessment: Effective at a hyper-local scale as an emergency measure; not a scalable or long-term solution.
Effective in:
- Amazon deforestation fell from ~27,000 km²/year in 2004 to ~4,500 km²/year in 2012 — a 70% reduction
- Used a multi-instrument approach combining monitoring, enforcement, credit restrictions, and legal reform
- Cost-effective: estimated $1–8 per tonne CO₂ avoided, compared to $50–150 for renewable energy
Limited in:
- Reversed under the Bolsonaro government (2019–2022), demonstrating political vulnerability
- Legal deforestation under the revised Forest Code still permits significant clearing
- Does not address consumption patterns in importing countries that drive demand for deforested-land products
- Cerrado (Brazil’s savanna biome) excluded from many protections; deforestation there increased
Overall assessment: One of the most effective demonstrated responses to tropical deforestation in history, but politically reversible and incomplete.
Effective in:
- Channelling significant finance to forest-rich developing nations (Norway–Brazil Fund: \$1.2 billion; Norway–Indonesia: \$1 billion)
- Building national monitoring and reporting capacity
- Maintaining forest cover in some participating jurisdictions
Limited in:
- Difficult to establish credible additionality (was the forest genuinely “saved”?)
- Leakage risk: deforestation displaced to unprotected areas in same country
- Political instability undermines long-term results
- Community benefit-sharing often inadequate — local communities bear opportunity costs
- Scale of finance remains insufficient compared to economic incentive to clear
Overall assessment: Partially effective; most effective where paired with strong national governance (Brazil model). Results are inconsistent globally.
KEY TAKEAWAY: No response to date has fully halted either glacier melt or tropical deforestation. Brazil’s PPCDAM comes closest to a scalable success story for deforestation. For glacier melt, global mitigation through the Paris framework is the only durable solution, but current commitments are insufficient.
EXAM TIP: Structure your evaluation with: evidence of success (quantified), then limitations. Conclude with an overall judgement. A response can be “partially effective” or “effective in the short term but limited in scale/sustainability.” Avoid absolute statements like “completely effective” or “totally failed.”
VCAA FOCUS: VCAA examiners reward responses that use specific data to support evaluation. Percentages, year comparisons, and named outcomes (e.g., “deforestation fell 70%”) are far stronger than general statements.
