investigating the causes of water scarcity (for example, an absolute shortage of water (physical), inadequate development of water resources (economic), or the ways water is used)
Sustainability
discussing the advantages and disadvantages of strategies to overcome water scarcity (for example, recycling (‘grey water’), stormwater harvesting and re-use, desalination, inter-regional transfer of water and trade in virtual water, and reducing water consumption)
Sustainability
examining why water is a difficult resource to manage and sustain (for example, because of its shared and competing uses and variability of supply over time and space)
investigating whether the use of water in their place is sustainable
investigating land use management practices that have adversely affected water supply, such as land clearing and some farming practices