Ocean Acidification

Paul Andersen explains ocean acidification, its causes, and its impact on marine life. He demonstrates how carbon dioxide lowers pH, making water more acidic, and discusses the chemical reactions involved. The video highlights the effects on marine organisms, future projections, and the importance of reducing carbon dioxide to mitigate these changes.

What is the pH level of carbonated water after adding carbon dioxide?

• 3.6

• 5.5

• 8.0

• 7.0

What happens to the pH level when more hydrogen ions are present in a solution?

• The pH level decreases

• The pH level increases

• The pH level remains the same

• The pH level becomes neutral

How does a decrease in pH affect marine organisms?

• Decreases metabolism

• Has no effect

• Increases metabolism

• Improves immune response

What was the pH level of the oceans during pre-industrial times?

• 7.0

• 8.14

• 8.25

• 7.8

What is the role of carbonate in marine ecosystems?

• It increases ocean temperature

• It has no significant role

• It decreases ocean alkalinity

• It forms the shells of marine organisms

What is the projected pH level of oceans by 2100?

• 8.25

• 8.14

• 7.80

• 7.0

How can we mitigate both global warming and ocean acidification?

• Decrease carbon dioxide emissions

• Increase ocean temperature

• Increase carbon dioxide emissions

• Decrease ocean alkalinity