Human Effects on Water

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

Recycling trash helps prevent plastic and other unwanted trash from entering our ocean systems.

• Positive Human Impact on Ocean Systems

• Negative Human Impacts on Ocean Systems

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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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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

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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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Is the following an example of a positive or negative impact on the earth's ocean systems? Educating the public helps communities generate interest and engages the public which results in awareness, knowledge, and understanding of the importance of our ocean systems.

• Positive Human Impact on Ocean Systems

• Negative Human Impacts on Ocean Systems

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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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Which of the following is NOT a way to help our oceans?

• Using reusable bags when grocery shopping

• Conserving water

• Riding a bike instead of driving a car

• Littering

What is one way humans are trying to positively impact the ocean?

• Fishing

• Creating artificial reefs

• Harvesting oil and natural gas

• Transporting goods in ocean vessels

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This graph shows the sources of the nitrogen entering the Gulf of Mexico as pollution. What is one conclusion you can make based on the information in the graph?

• Nitrogen that comes from the atmosphere is more harmful than nitrogen that comes from crops.

• Most nitrogen pollution found in the Gulf of Mexico comes from farming crops.

• Corn and soybeans are the only crops associated with nitrogen pollution.

• Nitrogen is not a problem in the Gulf of Mexico.

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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