3.2.2 The Hydrosphere

Question 1

Ocean currents

Answer 1

• thermohaline circulation
• El Niño La Niña
• ## North Atlantic conveyor

Question 2

Increasing sustainability treating contaminated water

Answer 2

• litter
• suspended solids
• some metals and odours
• organic pollutants
• salt
• pathogens.

Question 3

Management of water resources

Answer 3

• metering
• low water-use appliances
• greywater use.

Question 4

Exploitation of new resources

Answer 4

• rainwater catchment
• new reservoirs/estuary barrages
• unexploited aquifers
• inter-basin transfers.