Impact of Ocean Acidification on Crabs

The video discusses how the climate crisis, through ocean acidification, is affecting Dungeness crabs. As carbon dioxide levels rise, the ocean becomes more acidic, impacting the crabs' ability to smell and find food. Research shows that crabs in acidic waters have neurons that are less responsive to odors due to physical shrinkage. This is the first time such changes have been observed, highlighting the significant impact of carbon dioxide on marine life.

What is one of the main reasons for the decline in Dungeness crab populations?

• Overfishing

• Ocean acidification

• Pollution

• Habitat loss

How do Dungeness crabs primarily locate their food?

• By sound

• By smell

• By touch

• By sight

What change in behavior is observed in crabs living in more acidic waters?

• Increased antenna flicking

• Decreased antenna flicking

• More frequent swimming

• Less frequent feeding

By what percentage have the sensory neurons in crabs shrunk due to ocean acidification?

• 75%

• 25%

• 10%

• 50%

Why is the discovery of neuron shrinkage in crabs significant?

• It indicates crabs are becoming more intelligent.

• It shows crabs are evolving rapidly.

• It is the first time such a change has been observed due to carbon dioxide.

• It suggests crabs are adapting to new environments.