Ocean Acidification and Its Effects

Ocean acidification, often called the 'evil twin' of global warming, is caused by carbon dioxide dissolving in seawater, forming a weak acid. This process affects marine organisms that rely on calcium carbonate shells, such as clams, snails, and corals, making it harder for them to form shells. Cold waters absorb more CO2, increasing acidification, which impacts food chains, notably affecting Pacific salmon. Historical data helps predict future changes in ocean chemistry and its effects on marine life.

What is ocean acidification often referred to as?

• The savior of marine life

• The evil twin of global warming

• A natural ocean process

• A solution to climate change

Why is ocean acidification a concern for marine organisms?

• It makes the water too warm for them

• It makes it difficult for them to secrete calcium carbonate shells

• It increases the oxygen levels in the water

• It causes the water to become too salty

What happens when carbon dioxide dissolves in seawater?

• It forms a weak acid

• It forms a strong acid

• It forms a base

• It has no effect

Which marine organisms are particularly vulnerable to ocean acidification?

• Sharks

• Sea turtles

• Dolphins

• Planktic snails

How does ocean acidification affect Pacific salmon?

• It increases their population

• It has no effect on them

• It reduces their food source

• It makes them grow faster

What have scientists observed in oysters due to ocean acidification?

• They become more colorful

• They cannot secrete their first shells

• They thrive in acidic waters

• They grow larger shells

What historical events have changed the acidity of the sea?

• Increased rainfall

• Decreased sunlight

• Massive volcanic eruptions

• Rise in sea levels

Why is studying past ocean acidification important?

• To predict future weather patterns

• To understand current ecosystem behavior

• To increase fish populations

• To decrease global temperatures

What can be predicted by understanding past ocean acidification events?

• The end of global warming

• The rise of new continents

• The extinction of all marine life

• Future seawater chemistry

What is the main cause of ocean acidification?

• Increased salt concentration

• Increased carbon dioxide in the atmosphere

• Decreased oxygen levels

• Decreased water temperature