Understanding the Water Cycle and Conservation

What is the primary result of water traveling through extensive human-made systems before reaching homes?

• It arrives cleaner and safer

• It evaporates completely

• It becomes significantly polluted

• It is used for generating energy

How have human activities historically altered natural water reserves?

• By creating more natural lakes

• By reducing river flows significantly

• By increasing groundwater levels

• By purifying the water naturally

What is a major environmental issue caused by urban development?

• More efficient water usage

• Increased air freshness

• Decreased water pollution

• Increased flooding and pollution from runoff

What is the impact of paving over natural landscapes in urban areas?

• Reduces surface water runoff

• Increases groundwater recharge

• Leads to higher flood risk and pollution

• Improves natural water filtration

What role do wetlands play in the ecosystem?

• They increase pollution

• They serve as natural filters

• They contribute to land erosion

• They decrease biodiversity

What percentage of California's total energy demand is used for water management?

• About 20%

• About 5%

• About 35%

• About 50%

What is the main disadvantage of traditional sewer systems?

• They enhance local water quality

• They contribute to increased water pollution

• They recycle water efficiently

• They reduce energy consumption

Why is desalination not favored despite water scarcity?

• It is highly cost-effective

• It uses minimal energy

• It increases freshwater availability significantly

• It harms marine life and is energy-intensive

What is a key feature of low-impact development in urban areas?

• It relies solely on desalination

• It increases water runoff

• It reduces the need for water treatment

• It captures and absorbs water effectively

Which practice is NOT a way to conserve water at home?

• Using low-flow showerheads

• Maintaining large, lush lawns

• Installing modern appliances

• Reusing grey water