- Created by: EmilyN21
- Created on: 17-06-15 19:10
4.3 What factors affect the supply and use of resources?
Background: Western USA covers 60% of the US, holding 40% of the population and recieving 25% of rainfall - Therefore demand exceeds the supply.
Factors affecting supply:
- Low amounts of rainfall because of the Meditteranean climate.
- Excessive pumping of aquifers.
- Deforestation has reduced evapotranspiration.
- High evaporation from…