Exploring Oceans and Their Resources

What is marine biodiversity and why is it important?

• Marine biodiversity refers to the number of fish species only.

• Marine biodiversity is the study of ocean currents and their effects.

• It is important solely for tourism and recreation.

• Marine biodiversity is the variety of life in ocean ecosystems, and it is crucial for ecosystem health, food security, and resilience to environmental changes.

How does the fishing industry impact marine ecosystems?

• Fishing practices help restore damaged habitats in the ocean.

• The fishing industry promotes biodiversity in marine ecosystems.

• The fishing industry has no impact on marine ecosystems.

• The fishing industry negatively affects marine ecosystems by causing overfishing, bycatch, habitat destruction, and the introduction of invasive species.

What are the main sources of pollution in the oceans?

• Land runoff, plastic waste, oil spills, sewage discharge, industrial waste.

• Chemical fertilizers from agriculture

• Airborne pollutants from factories

• Noise pollution from ships

What are some renewable energy sources derived from the ocean?

• Geothermal energy

• Nuclear energy

• Natural gas

• Tidal energy, wave energy, ocean thermal energy conversion (OTEC), salinity gradient energy

How do shipping and trade routes affect ocean health?

• Shipping routes improve ocean health by reducing carbon emissions.

• Trade routes enhance marine biodiversity and ecosystem stability.

• Shipping activities promote the growth of coral reefs and marine life.

• Shipping and trade routes can negatively impact ocean health through pollution, noise, and the spread of invasive species.

What are the environmental impacts of fuel extraction from the sea?

• Improved water quality

• The environmental impacts include oil spills, habitat destruction, water pollution, and contribution to climate change.

• Increased fish populations

• Enhanced marine biodiversity

How does desalination provide freshwater from ocean water?

• Desalination uses ocean water directly without any treatment.

• Desalination provides freshwater by removing salt and impurities from ocean water.

• Desalination creates freshwater by boiling ocean water.

• Desalination adds minerals to ocean water to make it drinkable.

What technologies are used to harness tidal and wave energy?

• Geothermal heat pumps

• Wind turbines

• Tidal stream generators, tidal barrages, point absorbers, oscillating water columns, and attenuators.

• Solar panels

What are the consequences of overfishing on marine life?

• Overfishing causes depletion of fish populations, loss of biodiversity, and disruption of marine ecosystems.

• Overfishing has no impact on marine ecosystems.

• Overfishing increases fish populations and promotes biodiversity.

• Overfishing leads to healthier marine life and ecosystems.

How can we balance economic resources from the sea with environmental protection?

• Increase fishing quotas without restrictions.

• Dismantle marine protected areas for resource extraction.

• Ignore environmental impacts for economic gain.

• Implement sustainable practices and regulations to protect marine ecosystems while utilizing resources.