Oceans 8E12 Objective NC

What is the evidence that Earth’s oceans are a reservoir of nutrients, minerals, dissolved gases, and life forms?

• Fictional stories and myths

• Observations of desert ecosystems

• Data from outer space

• Scientific research, oceanography studies, and observations of marine ecosystems

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In the year 3000, which underwater city is known for its high biodiversity and productivity?

• Desert city

• Arctic city

• Coral city

• Freshwater city

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In a future where humans have colonized underwater cities, how does the process of upwelling impact the marine life around these cities?

• Upwelling causes marine life to migrate away from the nutrient-rich areas around the cities.

• Upwelling has no impact on marine life around the cities and does not affect the food chain.

• Upwelling provides essential nutrients for marine life around the cities and supports a productive food chain.

• Upwelling depletes essential nutrients for marine life around the cities and disrupts the food chain.

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Explain the behavior of gases in the marine environment and its significance.

• Gases in the marine environment affect the pH balance of the water and the exchange of gases between the ocean and the atmosphere.

• Gases in the marine environment do not interact with the atmosphere

• The behavior of gases in the marine environment is not significant

• Gases in the marine environment have no impact on organisms or the water

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Discuss the value and sustainability of marine resources.

• Human activities have no impact on the sustainability of marine resources

• The value of marine resources is solely determined by their market price

• Marine resources have no value and are not sustainable

• The value and sustainability of marine resources depend on their importance for various aspects of human life and the impact of human activities on their long-term viability.

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What are some examples of deep ocean technologies used for exploration and research?

• Weather balloons

• Drones

• Remotely Operated Vehicles (ROVs), Autonomous Underwater Vehicles (AUVs), Deep-sea Submersibles, Sonar and Acoustic Imaging Systems

• Satellites

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How do estuaries contribute to the health of the oceans and surrounding ecosystems?

• Estuaries are only important for recreational activities and have no ecological significance

• Estuaries provide important habitats and act as filters for pollutants

• Estuaries contribute to the health of the oceans by increasing pollution

• Estuaries have no impact on the health of the oceans and surrounding ecosystems

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What are the main factors that influence the biodiversity of marine ecosystems?

• Temperature, salinity, nutrient availability, and human activities

• Marine mammal population

• Wind speed and direction

• Land-based pollution

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In the future, as we colonize planets with oceans, we may face a phenomenon similar to ocean acidification on Earth. Explain this concept and its potential impact on extraterrestrial marine life.

• Ocean acidification is a result of increased oxygen levels in the ocean, which benefits marine life.

• Ocean acidification is the process of the ocean becoming more acidic due to the absorption of carbon dioxide from the atmosphere. This can have detrimental effects on marine life, particularly on organisms with calcium carbonate shells or skeletons.

• Ocean acidification has no impact on marine life and is a natural process.

• Ocean acidification is caused by excessive salt content in the water, leading to a decrease in pH levels.

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Discuss the role of oceans in regulating the Earth's climate.

• Oceans play a minor role in climate regulation compared to landmasses

• Oceans help regulate the Earth's climate by absorbing and distributing heat.

• Oceans contribute to global warming by releasing heat

• Oceans have no role in regulating the Earth's climate

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