Human Impact on Oceans

What percentage of the Earth's surface is covered by oceans?

• About 70%

• About 50%

• About 80%

• About 60%

What role do oceans play in the climate system?

• They regulate the planet's climate

• They increase global warming

• They have no impact

• They decrease air quality

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What is a major cause of ocean pollution?

• Natural sedimentation

• Volcanic eruptions

• Industrial discharges

• Solar flares

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What causes hypoxia zones in oceans?

• Decreased salinity

• Increased oxygen levels

• Marine construction

• Agricultural runoff

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Which species is mentioned as being heavily overfished?

• Shrimp

• Salmon

• Bluefin tuna

• Clownfish

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What is bycatch?

• A type of fish

• A marine conservation program

• Unintentional catch of non-target species

• A fishing technique

Why is overfishing a problem?

• It leads to the collapse of fisheries

• It increases fish populations

• It promotes marine biodiversity

• It makes fish cheaper

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NGSS.MS-LS2-4

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What is a significant threat to marine life due to plastic waste?

• Sunlight reduction

• Noise pollution

• Algal blooms

• Microplastics ingestion

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What is a proposed solution for sustainable ocean management?

• Promoting the use of non-biodegradable materials

• Reducing public awareness campaigns

• Decreasing marine protected areas

• Strengthening regulations on waste disposal

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How do marine protected areas (MPAs) help oceans?

• By reducing sunlight

• By promoting overfishing

• By conserving marine biodiversity

• By increasing pollution

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