Ocean Acidification (Seminar)
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Ocean acidification threatens corals and shelled animals primarily because it severely reduces the concentration of _______ ions in seawater. These ions are the essential building blocks needed to form and maintain their calcium carbonate structures.
carbonate
If coral reefs collapse due to acidification and other stressors, what is the most likely cascading effect on other marine life?
Biodiversity will sharply decline as species lose their food, shelter, and nursery grounds.
A fish experiencing acidosis (a disruption in blood chemistry caused by acidic water) has to burn extra energy to correct the problem. What is a likely consequence for the fish?
It will have less energy for essential activities like growth, reproduction, and evading predators.
Ocean acidification can reduce the survival of certain fish larvae even if they do not build shells or skeletons. Which of the following best explains this effect?
It alters water chemistry, impairing sensory and developmental processes
Approximately 25% of marine species depend on coral reefs at some point in their life cycle. If reefs decline due to ocean acidification, both ________ and ________ dependent species are likely to experience population declines.
directly, indirectly
Which statement correctly explains why rising ocean temperatures accelerate the progression of ocean acidification, despite the role of the biological and solubility pumps?
Warming waters decrease the solubility of CO2, resulting in the ocean’s reduced ability to absorb atmospheric CO2, and leading to higher atmospheric CO2 and further warming by creating a positive feedback loop.
What are the drawbacks of seaweed cultivation?
All of the above (Its energy consumption makes it more expensive than amount of carbon it can store It requires a really big area It can take nutrients away from other life in the water )
Which one does NOT apply to artificial upwelling and downwelling?
They are low-risk, well-tested methods for CO2 removal
Which of the following is demonstrative of the correct combination of processes that most directly contribute to coastal acidification (differentiating it from open-ocean acidification)?
Upwelling of CO2-rich deep waters and nutrient-driven eutrophication
Why are the higher latitude oceans, especially at the Poles, more acidified than all other oceans at varying latitudes? (SHORT ANSWER QUESTION)
These oceans are the coldest on earth and therefore have a greater CO2 absorption ability.