IB ESS Unit 4.4.3 Water Pollution

What is domestic sewage primarily composed of?

• Industrial waste

• Household waste (Human excrement)

• Agricultural run-off

• Plastic waste

Which of the following is a common pathogen found in and spread via domestic sewage?

• Phosphorus

• TBT

• Nitrogen

• Cholera

Eutrophication in aquatic systems is primarily caused by?

• Oil spills

• Solid waste

• Excessive nutrients

• Heavy metals

What type of pollution is agricultural run-off classified as?

• Thermal pollution

• Chemical pollution

• Non-point-source pollution

• Point-source pollution

Which chemical is known for causing reproductive abnormalities in aquatic species?

• Nitrogen

• TBT

• PCBs

• Phosphorus

What is the main environmental impact of oil spills?

• Decreased water temperature

• Increased oxygen levels

• Increased biodiversity

• Decreased sunlight penetration

What is the primary concern regarding plastic pollution in aquatic ecosystems?

• Eutrophication

• Bioaccumulation

• Thermal discharge

• Chemical toxicity

What is the effect of thermal discharge from power plants on aquatic organisms?

• Decreased water temperature

• Decreased metabolic rates

• Increased reproductive rates

• Increased dissolved oxygen

Which of the following is a method to reduce water pollution?

• Increasing industrial output

• Using single-use plastics

• Biodegradable packaging

• Ignoring waste disposal

What is the role of citizen science initiatives in addressing water pollution?

• To increase industrial waste

• To provide valuable information

• To reduce biodiversity

• To promote oil spills