This chapter teaches you to explain environmental change and compare responses using evidence, not stock phrases. It is part of SPM Geography.
What does this chapter cover?
The chapter has four core skills and two sub-topics.
- Explaining environmental impacts with evidence.
- Comparing management responses.
- Interpreting fieldwork data.
- Separating local evidence from generic claims.
The sub-topics are effects and management of resource extraction and economic activity and environmental evidence.
How do the parts connect?
Impacts come first, because you cannot judge a response until you know the problem. Comparison then asks which response fits the evidence better.
Fieldwork reading and the local-versus-generic skill support both. They teach you what a dataset can and cannot show.
One orienting example
This is an original case. A river carries 12 mg of silt per litre upstream and 48 mg per litre downstream of a construction site.
A generic claim: “Construction pollutes rivers.” An evidence-based claim: “Silt is 48 − 12 = 36 mg per litre higher downstream, which is 4 times the upstream level, so the site is a likely source.” The second uses the data, and the word likely keeps it accurate.
Who should start where?
A student who writes long but general answers should start with the impacts lesson. A student who writes specific answers but struggles to choose between options should go to comparing responses.
The chapter practice set shows where the gaps are. The graph evidence and fair-comparison lab helps with setting out evidence.
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