Eutrophication Effects and Control Methods

The video tutorial explains eutrophication, a process where excess nutrients from fertilizers lead to dense plant growth in water bodies, causing oxygen depletion and death of aquatic life. It covers the effects of eutrophication, such as water toxicity and reduced biodiversity, and suggests control measures like limiting nutrient runoff and fish harvesting. The video concludes with a recap of the causes, effects, and solutions to eutrophication.

What is the primary cause of eutrophication in water bodies?

• Overfishing

• Increased water temperature

• Nutrient runoff from land

• Excessive sunlight

What happens to algae when eutrophication occurs?

• They turn into fish food

• They become toxic

• They die due to blocked sunlight

• They thrive and multiply

How does eutrophication affect oxygen levels in water bodies?

• Oxygen levels fluctuate

• Depletes oxygen levels

• Has no effect on oxygen levels

• Increases oxygen levels

Which of the following is a visible effect of eutrophication?

• Clearer water

• Increased fish population

• Green and toxic water

• More aquatic plants

What is a consequence of decreased biodiversity due to eutrophication?

• Increased water clarity

• More diverse aquatic life

• Fish population decline

• Enhanced plant growth

Which of the following is NOT an effect of eutrophication?

• Increased water transparency

• Support for toxic phytoplankton growth

• Decreased aesthetic value

• Toxic taste and color of water

What is one way to control eutrophication?

• Reduce water flow

• Increase nutrient runoff

• Introduce more fertilizers

• Harvest algal blooms

What is fish harvesting in the context of controlling eutrophication?

• Feeding fish with algae

• Growing fish to control nutrients

• Removing fish from water bodies

• Increasing fish population

What is the main focus of the recap section in the video?

• Detailed process of eutrophication

• Introduction to eutrophication

• Effects on human health

• Summary of causes, effects, and control measures