Effects On Ocean Life - The Carbon Cycle

The video discusses the impact of increased carbon in the oceans, which alters seawater chemistry and poses challenges for marine life that rely on carbonate shells. As CO2 dissolves in the ocean, it creates an acidic environment similar to Coca-Cola, affecting species from plankton to coral reefs. This acidification can lead to mass mortality or extinction of species, disrupting marine ecosystems and food chains. The video emphasizes the need to understand these changes and their broader ecological consequences.

What is the primary consequence of increased carbon in the oceans for marine organisms?

• It increases the water temperature.

• It enhances their growth.

• It changes the color of the water.

• It makes it difficult for them to form shells.

What is the pH level of the acid formed when CO2 dissolves in seawater?

• 5

• 7

• 9

• 3

What experiment can demonstrate the effect of acid on carbonate materials?

• Mixing sand with oil

• Dissolving chalk in vinegar

• Heating water with sugar

• Freezing water with salt

Why are shells and skeletons important for marine organisms?

• They help in photosynthesis.

• They provide protection.

• They aid in swimming.

• They are used for communication.

How might increased ocean acidity affect the food chain?

• It will only affect plankton.

• It could disrupt the entire food chain.

• It will benefit all marine species.

• It will have no impact.