Why are coral reefs overexploited?
How has human use of salt marshes changed over time?
The U.S. Integrated Ocean Observing System (IOOS) is best described as _______.
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It is crucial to study ocean microbes because _______.
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Which of the following is most negatively affected by fishing practices?
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Which of the following does not explain the importance of mangrove forests?
Which of the following is not one of the three major structures of coral reefs?
Harlequin shrimp _______.
Describe what led to modern mangrove forest replanting efforts.
Once the importance of mangrove forests to fisheries and the protection of coastlines against erosion were recognized, protecting them and rehabilitating them became a priority. Part of the rehabilitation of mangrove forests is being accomplished through natural regeneration, but it is also being accomplished by active replanting programs.
Describe the sources of marine debris and explain why it is a problem with global origins.
Marine debris consists of most anything used and discarded by humans. Winds, rivers and storms can carry this debris to the ocean from far inland, so it is not solely a case of pollution along shorelines. It is also true that oceangoing ships directly contribute to marine debris while they are at sea and not associated with any particular nation.
Explain how the polyp uses its tentacles.
The polyp uses its tentacles to capture and ingest the phytoplankton it eats. The tentacles are also the primary means of defense for the polyp. They conceal the stinging nematocyst cells. The tentacles are also used to clear away debris from the mouth of the polyp.
Compare salt marshes and mangrove forests and explain why mangrove forests are such critical habitats on high energy coasts.
Salt marshes and mangrove forests are both coastal habitats that exist where fresh and saltwater mingle. Salt marshes, however, are much more delicate and susceptible to wave action and therefore only thrive on low energy coasts. Mangrove trees provide a refuge on and thrive in high energy coastlines with strong wave action. Because they provide this secure habitat on high energy coasts many species take refuge in mangrove forests against the strong wave action.
Which of the following goals is the U.S. Integrated Ocean Observing System (IOOS) not intended to address?
Which of the following best explains the current state of the majority of the world’s fisheries?
Explain how Seafood Watch promotes environmentally responsible fishing practices.
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