The big idea: Extreme environments — hot arid deserts and cold polar/high-mountain regions — still hold valuable resources: land for agriculture, water in aquifers and ice, and minerals (oil, gas, metals).
Using them means weighing opportunities against challenges. The opportunities are the resources themselves and the technology + capital that unlock them; the challenges are the harsh climate, remoteness, poor accessibility and high costs.
The scope to use a resource varies from place to place — wealthier, better-connected, water-richer locations can exploit far more than remote, dry, capital-poor ones.
Key terms for resource use
- Resource — anything useful people extract or use (farmland, water, oil, gas, metals).
- Aridity — extreme dryness; low, unreliable rainfall and high evaporation.
- Irrigation — supplying water artificially to grow crops where rainfall is too low.
- Aquifer — an underground store of water in permeable rock, reached by wells/boreholes.
- Salinization — salt building up in irrigated soil as water evaporates, harming crops.
- Remoteness / accessibility — how far and how hard a place is to reach; it sets transport cost.
- Mineral extraction — mining or drilling for oil, gas and metals (e.g. Arctic oil).
Opportunities vs challenges: Every resource use in an extreme environment is a balance.
Opportunity = the resource + the technology, capital or market that lets you use it.
Challenge = the climate, distance, cost or environmental damage that holds it back. Top essays weigh the two.
Free preview
This is the free notes preview
You're reading the free notes. Aimnova Pro unlocks the full study experience — and you can try it free for 7 days:
- FlashcardsLock in vocabulary and key terms with spaced repetition.
- Practice questionsAnswer exam-style questions and get instant AI marking.
- Mock exams & past-paper vaultSit full mocks and see exactly how examiners award marks.
- Personalised study planA daily plan built around your exam date and weak areas.
How this is tested: A shaded resource map of an extreme environment — here a desert region coloured by water stress — is the usual starting figure. Read the key, then Identify the driest area, Estimate a value, or Describe the pattern ([1–2 marks]) before the short Outline [2] and Explain [6] questions on why aridity makes farming hard.
Quote a region name and a figure straight off the key — that is where the easy data marks are.
Read the key first. Which areas are darkest (most water-stressed) and so hardest to farm?
Interactive diagram
Explore the labelled diagram, charts and maps for this topic in full study mode.
Identify the most water-stressed area on the map and estimate its value.
Model answer plan
See the mark-by-mark plan — for / against / judgement, with marking guidance — in study mode.
| Resource | Opportunity | Challenge |
|---|---|---|
| Farmland | Warm year-round; long growing season if watered | Low, unreliable rainfall; desertification; wind erosion |
| Water | Deep aquifers; rivers crossing the desert (exogenous) | High evaporation; falling water tables; salinization |
| Irrigation tech | Dams, drip irrigation, solar wells, desalination | Costly; over-extraction; competition between users |
| Minerals | Oil, gas, phosphates, copper near the surface | Remote; expensive transport; water needed to process |
Why low rainfall makes desert farming hard
- Crops need irrigation — rain is too low/unreliable, so farmers must pump water at high cost.
- Salinization — irrigation water evaporates and leaves salt in the soil, cutting yields.
- Desertification & wind erosion — bare, dry soil blows away and land degrades.
- Falling water tables — over-pumping aquifers lowers them, so wells must go deeper.
Real example — irrigated farming in inland Australia: In Australia's dry interior, the Murray-Darling Basin is farmed with large-scale irrigation drawn from rivers and aquifers.
Opportunity: warm sun + stored water grow cotton, fruit and cereals where rain alone could not.
Challenge: over-extraction has lowered river flows, and salinization has degraded soil — so the scope to farm varies sharply between water-rich and water-poor parts of the basin.
Explain two ways in which low rainfall makes farming difficult in a hot, arid environment.
Model answer plan
See the mark-by-mark plan — for / against / judgement, with marking guidance — in study mode.
Practice with real exam questions
Answer exam-style questions and get AI feedback that shows you exactly what examiners want to see in a full-marks response.
Cold extreme environments — the Arctic, Antarctica, Alaska and high mountains like the Alps — are rich in minerals (oil, gas, metals) but very hard to use. The barriers are remoteness, poor accessibility, a harsh climate and the cost of working there. Technology (drilling, desalination, water transfer, ice roads) is what turns a resource into a usable one.
| Factor | Opportunity it creates | Challenge it creates |
|---|---|---|
| Minerals (oil/gas/metals) | Valuable reserves (e.g. Arctic oil, Alaskan gas) | Need huge capital + technology to reach |
| Remoteness | Untouched, large reserves still available | High transport cost, distance from roads/ports, high wages |
| Accessibility | Ice roads / pipelines can be built | Steep relief, deep snow, ice limit access and lengthen travel |
| Cold climate | Permafrost gives firm ground to build on | Freezing slows work; thaw damages roads and pipelines |
Technology that unlocks water and minerals
- Drilling & boreholes — reach deep aquifers (arid) or oil and gas (cold/arid).
- Desalination — remove salt from seawater for usable freshwater in dry coasts.
- Water transfer schemes — pipe or canal water from a wetter region to a dry one.
- Solar-powered wells / pumps — lift groundwater where there is no grid power.
- Pipelines & ice roads — move oil, gas and supplies across remote frozen ground.
Real example — Arctic oil and gas (Russia, Alaska): Major oil and gas fields sit in the Russian Arctic and on Alaska's North Slope, with the Trans-Alaska Pipeline carrying oil ~1,300 km to an ice-free port.
Opportunity: enormous reserves and high prices justify the cost.
Challenge: extreme remoteness means very high transport costs and wages; thawing permafrost can buckle pipelines; and spills threaten a fragile ecosystem. So extraction only pays where reserves are large and prices are high.
Outline one way that remoteness makes developing resources in a cold environment difficult, and explain why.
Model answer plan
See the mark-by-mark plan — for / against / judgement, with marking guidance — in study mode.
How this is tested — the [10] Examine essay: Paper 1, Option C ends with a 10-mark Examine essay, marked on markbands. Recurring versions ask you to weigh the opportunities and challenges of using a resource in an extreme environment — irrigation/agriculture in hot arid areas, or mineral extraction in one extreme environment.
Top band (9-10) needs: a named case study with data, both opportunities and challenges developed, an explanation of why the scope varies between places, and a justified evaluative conclusion.
Examine the opportunities and the challenges of mineral extraction in one extreme environment you have studied.
Model answer plan
See the mark-by-mark plan — for / against / judgement, with marking guidance — in study mode.