Freshwater 3 - Water scarcity and water quality

What is physical water scarcity?

• Water availability exceeds water demand

• Water resource development is sustainable

• Water is available but not accessible

• Water resource development is approaching unsustainable levels

What is economic water scarcity?

• Water is only available in arid regions

• Water is abundant in all areas

• Water is completely unavailable

• Water is available locally but not accessible

What is eutrophication?

• A type of water purification

• A method of irrigation

• A process that leads to dense algal growth due to nutrient concentration

• A process that increases oxygen levels in water

What is salinization?

• The process of increasing freshwater availability

• The increase of salt content in water due to evaporation

• The process of cleaning polluted water

• The reduction of salt in groundwater

What is the annual water supply threshold for water stress?

• 1,700 m³ per person

• 2,000 m³ per person

• 1,500 m³ per person

• 1,000 m³ per person

Which of the following is a significant source of water contamination?

• Rainwater harvesting

• Plastic disposal in oceans

• Desalination plants

• Natural filtration

What is a major consequence of agricultural activities on water quality?

• Increased biodiversity

• Improved irrigation techniques

• Reduction of waterborne diseases

• Pollution from fertilizers and pesticides

What is a prolonged period of abnormally low rainfall called?

• Salinization

• Eutrophication

• Drought

• Flood

What is the main cause of waterborne diseases?

• High rainfall

• Drought conditions

• Contaminated water

• Excessive irrigation

What is the impact of population migration on aquifers?

• Increased water levels

• Decreased water levels

• Improved water quality

• No impact