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Oceans indirectly provide land life with fresh water through

• the nitrogen cycle

• the carbon cycle

• the water cycle

• the ocean cycle

How do humans create artifical reefs?

• sinking old ships

• train cars

• pouring oil into the ocean

• allowing pollution to sink to the bottom of the ocean

What is the purpose of a artificial reef? (3 answers)

• to get rid of old boats

• create new habitats for ocean organisms

• support large fish population

• support life much like a natural coral reef

A negative impact includes runoff and pollution. Which of the following statement explains runoff and pollution?

• chemicals/trash that run off into rivers and end up in the ocean

• populations of fish and shellfish are dropping quickly bc they are being removed from oceans

• habitats have been destroyed by human developments

• humans create artifical reefs as a positive impact

Overfishing

• Negative impact

• Positive impact

Artificial reefs

• positive impact

• negative impact

Habitat destruction

• positive impact

• negative impact

Runoff and Pollution

• negative impact

• positive impact

Is the following an example of a positive or negative impact on the earth's ocean systems?

Artificial reefs placed on the seafloor enhance marine life by creating new reef habitats.

• Positive Human Impact on Ocean Systems

• Negative Human Impacts on Ocean Systems

Tags

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Is the following an example of a positive or negative impact on the earth's ocean systems?

Commercial fishing nets often times scrape the seafloor scooping up everything in its path. Dredge fishing destroys habitat and kills bycatch (fish, sharks, and other marine life caught unintentionally).

• Positive Human Impact on Ocean Systems

• Negative Human Impacts on Ocean Systems

Tags

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