Ocean Acidification and Marine Life

The video explores the topics of ocean warming and acidification, highlighting how human activities impact global ecosystems. It discusses the effects of ocean warming on marine species, particularly coral reefs, and explains the phenomenon of coral bleaching. The video also covers ocean acidification, detailing how increased atmospheric CO2 leads to lower ocean pH, affecting marine organisms' ability to form shells. The content emphasizes the importance of understanding these changes to address the challenges faced by marine ecosystems.

What is the primary reason land warms faster than oceans?

• Oceans reflect more sunlight than land.

• Land has a higher specific heat than water.

• Oceans have a higher specific heat than land.

• Land absorbs more sunlight than oceans.

Which marine habitat is most affected by ocean warming?

• Mangroves

• Coral reefs

• Seagrass beds

• Kelp forests

What happens to coral when it undergoes bleaching?

• It changes color to green.

• It expels its mutualistic algae.

• It grows faster.

• It becomes more colorful.

What percentage of marine species rely on coral reefs for part of their life cycle?

• 10%

• 25%

• 50%

• 75%

How does warmer water affect the amount of dissolved oxygen?

• Has no effect on dissolved oxygen

• Doubles the dissolved oxygen

• Decreases dissolved oxygen

• Increases dissolved oxygen

What is the main cause of ocean acidification?

• Decrease in atmospheric CO2

• Increase in oceanic oxygen

• Decrease in oceanic oxygen

• Increase in atmospheric CO2

What is the effect of increased CO2 on ocean pH?

• Increases pH, making it more acidic

• Has no effect on pH

• Decreases pH, making it more acidic

• Increases pH, making it more alkaline

Why is a decrease in ocean pH concerning for shell-forming organisms?

• It makes carbonates less soluble.

• It has no effect on carbonates.

• It makes carbonates more soluble.

• It increases the availability of carbonates.

What is a carbon sink in the context of ocean acidification?

• A process that releases carbon into the atmosphere

• A process that decreases ocean temperature

• A process that increases ocean temperature

• A process that absorbs carbon from the atmosphere

What chemical forms when CO2 dissolves in ocean water?

• Sulfuric acid

• Nitric acid

• Carbonic acid

• Hydrochloric acid