Topic 4.4 Water Pollution

What is the potential consequence of excessive plant growth due to eutrophication in marine waters?

• Increase in water quality
• Loss of biodiversity
• Enhanced recreation use
• Decrease in plant growth

What is the main source of organic pollution in water from the food and drink industry?

• Natural decomposition
• Sewage effluent
• Farm runoff
• Chemical fertilizers

What is the main concern with toxic metals in water?

• They can increase oxygen levels
• They can interfere with essential cellular processes
• They can cause eutrophication
• They can decrease biodiversity

What is the distinct smell associated with the breakdown of organic matter by anaerobic bacteria?

• Methane
• Ammonia
• Sulfur
• Rotten eggs

What is the main source of organic pollution in water?

• Sewage effluent
• Chemical fertilizers
• Industrial waste
• Natural decomposition

What is the main source of nitrates and phosphates in water?

• Chemical fertilizers
• Natural decomposition
• Industrial waste
• Sewage effluent

What is the term used to describe the process by which metals build up through the food chain?

• Respiration
• Photosynthesis
• Bioaccumulation
• Bio-magnification

What is the term used to describe the process by which metals build up within an organism over time?

• Photosynthesis
• Bio-magnification
• Respiration
• Bioaccumulation

What is the potential consequence of increased primary production due to eutrophication?

• Loss of biodiversity
• Increase in water quality
• Decrease in plant growth
• Enhanced recreation use

What is the potential consequence of toxic metals bioaccumulating in organisms?

• Increased biodiversity
• Interference with cellular processes
• Enhanced primary production
• Decreased oxygen levels