Water Pollution Quiz

What is water pollution?

• When water becomes too acidic for aquatic life

• When harmful substances contaminate a body of water

• When water becomes too salty for consumption

• When water temperature rises due to industrial activities

What is the leading cause of water degradation worldwide?

• Oil pollution

• Sewage and wastewater pollution

• Agricultural pollution

• Industrial pollution

What is the biggest consumer of global freshwater resources?

• Residential sector

• Agricultural sector

• Industrial sector

• Commercial sector

What is the number-one threat to water quality worldwide?

• Nutrient pollution

• Radioactive substances

• Oil pollution

• Sewage and wastewater pollution

What percentage of the world's wastewater flows back into the environment without being treated or reused?

• Less than 50%

• Around 60%

• Less than 30%

• More than 80%

Where does the vast majority of oil pollution in our seas come from?

• Tanker spills

• Land-based sources

• Illegal discharges

• Natural seeps

How are radioactive substances naturally released into marine environments?

• From tanker spills

• From under the ocean floor through fractures

• Through illegal oil dumping

• Through industrial discharges

What is the primary source of nutrient pollution in water bodies?

• Industrial waste

• Agricultural runoff

• Residential sewage

• Oil spills

What is the impact of water pollution on biodiversity?

• It increases biodiversity

• It has no impact on biodiversity

• It decreases biodiversity

• It changes the type of biodiversity

What percentage of the world's freshwater is available for human use?

• Less than 1%

• About 10%

• More than 50%

• About 25%