Water Pollution Management

What is the purpose of using biological control in managing pest populations?

• To increase biodiversity
• To introduce non-native species
• To reduce the use of synthetic pesticides
• To improve water quality

What is the purpose of using biodegradable pesticides in farming?

• To increase biodiversity
• To introduce non-native species
• To reduce the use of synthetic pesticides
• To improve water quality

Which of the following is NOT a method for reducing pesticide use in farming?

• Using synthetic fertilizers
• Applying pesticides only when necessary
• Storing pesticides in impermeable containers
• Using biodegradable pesticides

Which of the following is NOT a potential consequence of using non-native species for biological control?

• Threatening other species
• Changes in community composition
• Improving water quality
• Introducing new diseases

Which of the following is NOT a method for reducing algal blooms in water systems?

• Dredging the bottom to remove sediments
• Using macrophyte channels
• Using herbicides
• Mixing the water to aerate it

What is the purpose of using Zeolite A in managing eutrophication?

• To absorb nutrients from the water
• To remove nitrates and phosphates from sewage effluent
• To substitute phosphates in detergents
• To divert sewage effluent away from water systems

What is the purpose of using buffer zones in managing eutrophication?

• To absorb nutrients from the water
• To mix the water and prevent anoxic conditions
• To remove nitrates and phosphates from sewage effluent
• To restrict access of livestock to aquatic ecosystems

Which of the following is NOT a method for reducing nutrient levels in aquatic ecosystems?

• Diverting sewage effluent away from water systems
• Removing nitrates and phosphates from sewage effluent
• Using alternative approaches to reduce pest populations
• Using buffer zones to absorb nutrients

Which of the following is NOT a method for reducing fertilizer use in farming?

• Using organic fertilizers
• Applying fertilizers only when necessary
• Using synthetic pesticides
• Applying fertilizers during dry weather

What is the purpose of using macrophyte channels in managing eutrophication?

• To absorb nutrients from the water
• To control algal blooms
• To aerate the water
• To remove sediments from the bottom of the water