Three processes sketched, as models for building your own
These are illustrative sketches of the KIND of chain and evidence a strong case study needs — not a substitute for researching your own named, current, real figures, which the schedule explicitly rewards over anything generic.
Three cultural processes, sketched as an elements-and-links chain
More visitors than the town's wastewater system was designed for raises pressure to fund an upgrade, paid for through rates or a visitor levy.
Urbanisation on a city fringe
Population growth → demand for housing → rural land rezoned → subdivision and construction → new infrastructure extended → density and traffic rise near the new area
Rezoning rural land at the fringe is cheaper than intensifying near the centre, so growth spreads outward rather than upward, extending the distance infrastructure has to cover.
Agricultural intensification
Export demand rises → land converted to a more intensive use (e.g. dairying) → irrigation and fertiliser use increase → stocking rates rise → nutrient runoff increases → waterway quality declines
Higher stocking rates raise nutrient loading beyond what nearby waterways can absorb, showing up as algal blooms or restricted swimming downstream.
✓
Use the sketch, but replace every figure with a real one
These chains show the SHAPE a strong answer takes — name the elements in order, then trace a mechanism, not just a correlation, between two of them. For the exam you need your own named town, city fringe, or catchment, with real dates and real figures you have researched and can recall under pressure; a generic version of the chain above without a specific place attached caps at Achieved.
Where to find real, usable figures for your own case study
Stats NZ census data for population, dwelling and land-use figures by area.
Regional and district council state-of-the-environment reports for water quality, land-use change, and monitoring figures.
A council or Tourism NZ visitor-numbers or accommodation-consent dataset for a named town or region.
News coverage of a specific, dated policy change, infrastructure opening, or planning decision affecting your chosen environment.