Impact of Ocean Acidification and Climate

Claude Laureus, a glaciologist, explains how oceans absorb CO2, impacting the planet's climate. Oceans, like forests, are major carbon sinks and produce more oxygen than forests through phytoplankton photosynthesis. However, rising CO2 levels due to human activity lead to ocean acidification, threatening marine life with calcareous structures. This rapid change challenges the adaptation capacity of marine organisms, putting the climate-ocean equilibrium at risk.

What role do oceans play in maintaining the Earth's climate?

• They are the primary source of freshwater.

• They regulate temperature and absorb carbon dioxide.

• They are the main producers of fossil fuels.

• They are the largest producers of greenhouse gases.

How do oceans interact with carbon dioxide?

• They release carbon dioxide into the atmosphere.

• They absorb carbon dioxide and store it.

• They convert carbon dioxide into methane.

• They have no interaction with carbon dioxide.

What is the role of phytoplankton in the ocean?

• They decompose organic matter.

• They are predators of small fish.

• They perform photosynthesis, absorbing CO2 and releasing oxygen.

• They are responsible for ocean currents.

Why are oceans considered the 'lungs' of the planet?

• They contain the most diverse marine life.

• They are the largest bodies of water.

• They produce more oxygen than forests.

• They are the main source of seafood.

What is the main cause of increasing carbon dioxide levels in oceans?

• Natural volcanic activity.

• Human activities such as burning fossil fuels.

• Increased solar activity.

• Decreased oceanic currents.

What is ocean acidification?

• The decrease in ocean pH due to CO2 absorption.

• The increase in ocean temperature.

• The increase in ocean biodiversity.

• The process of oceans becoming saltier.

What chemical is formed when CO2 dissolves in ocean water?

• Nitric acid

• Carbonic acid

• Hydrochloric acid

• Sulfuric acid

How does ocean acidification affect marine life?

• It weakens the shells and skeletons of marine organisms.

• It increases the growth rate of coral reefs.

• It has no effect on marine life.

• It strengthens the shells of marine organisms.

Which organisms are most threatened by ocean acidification?

• Marine mammals

• Organisms with calcareous structures

• Fish with scales

• Deep-sea creatures

What is the current challenge regarding ocean and climate equilibrium?

• The oceans are becoming less acidic.

• There is no impact on the climate.

• The speed of change exceeds the adaptation capacity of marine life.

• The balance is stable and not a concern.