The Importance of the Ocean

What percentage of Earth's surface is covered by the water of the ocean system?

• Less than 3%

• More than 70%

• Less than 50%

• More than 80%

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What are three ways humans depend on the ocean?

• Teleportation

• Transportation

• Goods

• Recreation

More than half of the world’s oxygen is produced in the ocean by aquatic plants and photosynthesizing bacteria.

• True

• False

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Which of the following are products made using materials from the ocean? (Choose more than one)

• Detergent

• Oil

• Wooden furniture

• Joggers

The impact of overfishing on the ocean is:

• Increased biodiversity

• Decrease in fish populations

• Improved water quality

• Growth of coral reefs

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Which of the following is a result of chemicals and wastes entering the ocean?

• Increase in fish population

• Formation of ocean dead zones, where life can't survive

• Cleaner water

• More marine life

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Trash affects ocean organisms by:

• providing nutrients

• causing harm and pollution

• creating habitats

• having no effect

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The consequence of oil spills in the ocean is:

• Increased marine biodiversity

• Improved water quality

• Damage to marine life and ecosystems

• Enhanced fish population

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Aquaculture is the practice of raising aquatic organisms in controlled environments. How does it impact the ocean?

• It has no impact on the ocean.

• It only benefits the ocean ecosystem.

• It can lead to pollution and habitat destruction.

• It is the primary cause of ocean acidification.

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People rely on ocean organisms for ​ ​ and ​

• food
• medicine
• desalination
• watershed
• diamonds

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