Water pollution

The video discusses how human activities, such as the use of fertilizers and industrial waste, contribute to water pollution. It highlights the impact of these pollutants on aquatic life and ecosystems, using the 2010 toxic sludge spill in Hungary as an example. The video also explains how untreated sewage can pollute water supplies and the importance of water treatment processes. Finally, it suggests ways to reduce water pollution, including minimizing fertilizer use, managing industrial waste, and treating sewage, to maintain clean water and support life.

What is a consequence of fertilizers entering water systems?

• Increased oxygen levels

• Explosive algae growth

• Decrease in water temperature

• Improved water clarity

What was a significant outcome of the 2010 toxic sludge spill in Hungary?

• The river turned blue

• The river's oxygen levels increased

• The river turned red and many aquatic lives were lost

• The river became a tourist attraction

What is the term for wastewater produced by homes?

• Agricultural runoff

• Sewage

• Industrial waste

• Stormwater

How can untreated sewage affect water supplies?

• It can improve water quality

• It can increase fish population

• It can reduce water temperature

• It can cause diseases

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

• Ignoring industrial waste

• Increasing fertilizer use

• Releasing untreated sewage

• Carefully managing chemical waste from factories