Marine Vertebrates and Carbon Cycle

The video explains the natural balance of oxygen and carbon dioxide on Earth, highlighting how human activities have disrupted this balance by increasing CO2 levels, leading to climate change and other issues. It emphasizes the significant role of oceans and marine life, particularly marine vertebrates, in absorbing CO2. Marine vertebrates contribute to nutrient mixing and carbon sequestration, playing a crucial role in maintaining the planet's health.

What natural processes form the balancing act that supports life on Earth?

• Photosynthesis and respiration

• Evaporation and condensation

• Erosion and sedimentation

• Volcanism and weathering

Which human activities have disrupted the Earth's carbon cycle?

• Mining and quarrying

• Deforestation and agriculture

• Planes, trains, and automobiles

• Fishing and aquaculture

What are some consequences of increased atmospheric CO2?

• Increased biodiversity

• Climate change and sea level rise

• Decreased ocean salinity

• Enhanced plant growth

What is 'blue carbon'?

• Carbon stored in the atmosphere

• Carbon absorbed by ocean organisms

• Carbon found in fossil fuels

• Carbon emitted by vehicles

Which marine organisms are commonly associated with blue carbon mechanisms?

• Sea turtles and crabs

• Coral reefs and sponges

• Mangroves, kelp, and plankton

• Sharks and dolphins

How do marine vertebrates contribute to the ocean's carbon absorption?

• By mixing ocean waters and stimulating plankton

• By increasing water temperature

• By blocking sunlight

• By reducing ocean salinity

What role do whales play in the ocean's carbon cycle?

• They increase ocean acidity

• They consume all the plankton

• They block sunlight from reaching the ocean floor

• They mix nutrients vertically and horizontally

What happens to carbon when large marine vertebrates die?

• It is converted into oxygen

• It is released into the atmosphere

• It is buried and retired from the carbon cycle

• It is absorbed by other marine animals

How do marine vertebrates store carbon similarly to forests?

• As dissolved gases

• As biomass

• As fossil fuels

• As mineral deposits

Why should marine vertebrates be considered more than just a food source?

• They are difficult to catch

• They are a source of entertainment

• They increase the ocean's capacity to absorb carbon

• They are endangered species