Human Impact on the Marine Environment

The diagram below shows the relationship between some of the organisms in a marine food web. Which of the following is MOST LIKELY to happen if a large number of phytoplankton are killed from runoff entering the ocean?

• The number of porpoises would probably stay the same because porpoises are far removed from phytoplankton in the food web

• The number of zooplankton would probably increase because they wouldn’t have to compete with phytoplankton for food.

• The number of salmon would probably decrease because there would be less food available for zooplankton and herring.

• The Sun would probably not emit as much energy because there would not be as many phytoplankton in the ocean.

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NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Which of the following is associated with dead zones in the ocean?

• A decrease in nitrogen levels.

• An increase in oxygen levels.

• An increase in the number of fish.

• Runoff from fertilizers.

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NGSS.MS-ESS3-4

NGSS.MS-LS2-3

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

• Positive Human Impact on Ocean Systems

• Negative Human Impacts on Ocean Systems

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NGSS.MS-ESS3-4

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

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NGSS.MS-ESS3-4

NGSS.MS-LS2-4

NGSS.MS-LS2-5

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

Fertilizers from farms runoff into rivers and create dead zones at the mouth of rivers in our world's oceans.

• Positive Human Impact on Ocean Systems

• Negative Human Impacts on Ocean Systems

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

Is the following an example of a positive or negative impact on the earth's ocean systems? The great pacific garbage patch collects trash from our oceans currents from around the world.

• Positive Human Impact on Ocean Systems

• Negative Human Impacts on Ocean Systems

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NGSS.MS-ESS3-3

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NGSS.MS-LS2-5

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

An increase in carbon emissions means the oceans are absorbing more carbon dioxide which results in more acidic ocean water.

• Positive Human Impact on Ocean Systems

• Negative Human Impacts on Ocean Systems

Is the following an example of a positive or negative impact on the earth's ocean systems? Warmer global temperatures have caused glaciers to melt resulting in higher ocean levels which displace humans and destroy wetlands.

• Positive Human Impact on Ocean Systems

• Negative Human Impacts on Ocean Systems

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NGSS.MS-ESS3-5

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

Warmer ocean waters create more frequent and stronger storms

• Positive Human Impact on Ocean Systems

• Negative Human Impacts on Ocean Systems

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NGSS.MS-ESS2-6

Which of the following human activities is most directly linked to ocean acidification?

• Burning fossil fuels

• Deforestation

• Overfishing

• Plastic pollution

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NGSS.MS-ESS3-4