Eutrophication and Nutrient Management

The video explains eutrophication, a process where excess nutrients in water bodies lead to rapid algae growth, creating hypoxic zones that harm marine life. Human activities, such as agriculture and untreated sewage, contribute significantly to this issue. The video discusses solutions like reducing nutrient emissions, using eco-friendly products, and promoting sustainable practices to mitigate eutrophication's effects.

What is the estimated annual cost of the green plume in the Gulf of Mexico to the U.S. seafood and tourism industry?

• $100 million

• $82 million

• $120 million

• $50 million

What happens to the plants at the bottom when the surface is covered in algae?

• They die due to lack of sunlight

• They grow faster

• They become more nutritious

• They receive more sunlight

What is the term used for water with very low oxygen levels?

• Anoxic

• Oxic

• Hypoxic

• Hyperoxic

What are the two primary nutrients responsible for cultural eutrophication?

• Sulfur and Potassium

• Phosphorus and Nitrogen

• Carbon and Oxygen

• Calcium and Magnesium

How can individuals help reduce the impact of fertilizers at home?

• By using more fertilizers

• By applying fertilizers during rain

• By checking and replacing with less impactful fertilizers

• By using fertilizers only in winter

Which nutrient is usually in shortest supply in marine systems?

• Phosphorus

• Nitrogen

• Calcium

• Potassium

What is the primary source of phosphorus in the Chesapeake Bay?

• Agricultural runoff

• Stormwater runoff and wastewater

• Industrial waste

• Natural sources

What is the main focus of solutions to eutrophication?

• Reducing nutrient emissions

• Enhancing nutrient emissions

• Increasing nutrient emissions

• Ignoring nutrient emissions

What is one of the last ways to limit the impact on eutrophication mentioned in the video?

• Using more chemical cleaning products

• Increasing the use of fossil fuels

• Using eco-friendly cleaning products

• Ignoring nutrient waste

What is atmospheric deposition?

• The natural settling of emissions into water bodies

• The increase of nutrients in the atmosphere by humans

• The process of rainwater evaporating

• The burning of fossil fuels