Ocean Acidification Quiz

What percentage of the Earth's surface is covered by oceans?

• Two-thirds

• Three-quarters

• One-third

• Half

What is the term used to describe the process of increasing ocean acidity?

• Marine pollution

• Ocean acidification

• Ocean salinization

• Global warming

What percentage of carbon dioxide emissions have the oceans absorbed?

• 10%

• 75%

• 25%

• 50%

What happens to seawater pH as more carbon dioxide dissolves in the ocean?

• It decreases

• It fluctuates

• It increases

• It remains the same

What kind of conditions do scientists face when collecting ocean samples in the North Atlantic?

• Calm and sunny

• Stormy and rough

• Hot and humid

• Cold and dry

By how much has ocean acidity increased since pre-industrial times?

• 50%

• 10%

• 75%

• 26%

What is the expected increase in ocean acidity by the end of this century if carbon dioxide emissions are not reduced?

• 50%

• 100%

• 170%

• 200%

What is a major concern for marine species as ocean acidity increases?

• Increase in water temperature

• Increase in salinity

• Decrease in oxygen levels

• Decrease in carbonate ions

What percentage of cold-water corals are projected to be affected by ocean acidification by the end of this century?

• 30%

• 50%

• 70%

• 90%

What is the primary solution proposed to slow down ocean acidification?

• Using more plastic

• Planting more trees

• Reducing carbon dioxide emissions

• Increasing fishing activities