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Ocean Acidification: A Growing Threat to Marine Life

Description: Ocean Acidification: A Growing Threat to Marine Life
Number of Questions: 14
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Tags: ocean acidification marine life climate change environmental impact
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What is ocean acidification?

  1. The decrease in the pH of the ocean

  2. The increase in the pH of the ocean

  3. The decrease in the salinity of the ocean

  4. The increase in the salinity of the ocean


Correct Option: A
Explanation:

Ocean acidification is a process that occurs when the pH of the ocean decreases, making it more acidic.

What is the primary cause of ocean acidification?

  1. Volcanic eruptions

  2. Deforestation

  3. The burning of fossil fuels

  4. Agricultural runoff


Correct Option: C
Explanation:

The burning of fossil fuels releases carbon dioxide into the atmosphere, which is absorbed by the ocean and forms carbonic acid, lowering the pH of the ocean.

How has the pH of the ocean changed since the pre-industrial era?

  1. It has increased by 0.1 pH units

  2. It has decreased by 0.1 pH units

  3. It has increased by 1 pH unit

  4. It has decreased by 1 pH unit


Correct Option: B
Explanation:

Since the pre-industrial era, the pH of the ocean has decreased by approximately 0.1 pH units, making it more acidic.

What is the projected pH of the ocean by the end of the century if current trends continue?

  1. 7.8

  2. 8.2

  3. 8.5

  4. 7.4


Correct Option: D
Explanation:

If current trends continue, the pH of the ocean is projected to decrease to around 7.4 by the end of the century, which would be the lowest pH in millions of years.

Which marine organisms are most vulnerable to ocean acidification?

  1. Coral reefs

  2. Clams

  3. Oysters

  4. All of the above


Correct Option: D
Explanation:

Coral reefs, clams, and oysters are all marine organisms that are particularly vulnerable to ocean acidification, as they rely on calcium carbonate to build their shells and skeletons.

How does ocean acidification affect coral reefs?

  1. It causes coral bleaching

  2. It slows coral growth

  3. It makes coral more susceptible to disease

  4. All of the above


Correct Option: D
Explanation:

Ocean acidification can cause coral bleaching, slow coral growth, and make coral more susceptible to disease, all of which can lead to the degradation of coral reefs.

How does ocean acidification affect clams and oysters?

  1. It makes their shells thinner and weaker

  2. It makes them more susceptible to predators

  3. It impairs their ability to reproduce

  4. All of the above


Correct Option: D
Explanation:

Ocean acidification can make the shells of clams and oysters thinner and weaker, making them more susceptible to predators and impairing their ability to reproduce.

What are some of the potential consequences of ocean acidification for marine ecosystems?

  1. Loss of biodiversity

  2. Disruption of food chains

  3. Reduced productivity of fisheries

  4. All of the above


Correct Option: D
Explanation:

Ocean acidification can lead to loss of biodiversity, disruption of food chains, and reduced productivity of fisheries, all of which can have significant impacts on marine ecosystems.

What are some of the potential consequences of ocean acidification for human societies?

  1. Reduced food security

  2. Loss of coastal protection

  3. Increased risk of flooding

  4. All of the above


Correct Option: D
Explanation:

Ocean acidification can lead to reduced food security, loss of coastal protection, and increased risk of flooding, all of which can have significant impacts on human societies.

What can be done to mitigate the impacts of ocean acidification?

  1. Reduce carbon emissions

  2. Protect and restore coastal ecosystems

  3. Develop more resilient marine organisms

  4. All of the above


Correct Option: D
Explanation:

Mitigating the impacts of ocean acidification requires a combination of actions, including reducing carbon emissions, protecting and restoring coastal ecosystems, and developing more resilient marine organisms.

What is the role of international cooperation in addressing ocean acidification?

  1. It is essential for coordinating global efforts

  2. It is necessary for sharing scientific knowledge

  3. It is important for providing financial assistance to developing countries

  4. All of the above


Correct Option: D
Explanation:

International cooperation is essential for coordinating global efforts, sharing scientific knowledge, and providing financial assistance to developing countries in order to address ocean acidification.

What is the role of individual actions in addressing ocean acidification?

  1. Reducing carbon footprint

  2. Supporting sustainable seafood practices

  3. Educating others about ocean acidification

  4. All of the above


Correct Option: D
Explanation:

Individual actions, such as reducing carbon footprint, supporting sustainable seafood practices, and educating others about ocean acidification, can contribute to addressing the issue.

What is the role of scientific research in addressing ocean acidification?

  1. It is essential for understanding the causes and impacts of ocean acidification

  2. It is necessary for developing mitigation and adaptation strategies

  3. It is important for monitoring the changes in ocean chemistry

  4. All of the above


Correct Option: D
Explanation:

Scientific research is essential for understanding the causes and impacts of ocean acidification, developing mitigation and adaptation strategies, and monitoring the changes in ocean chemistry.

What is the role of education and public awareness in addressing ocean acidification?

  1. It is essential for raising awareness about the issue

  2. It is necessary for encouraging individual actions

  3. It is important for promoting policy changes

  4. All of the above


Correct Option: D
Explanation:

Education and public awareness are essential for raising awareness about ocean acidification, encouraging individual actions, and promoting policy changes to address the issue.

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