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16 Cards in this Set
- Front
- Back
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Because their usefulness is not readily apparent, wetlands have often been filled in for agricultural land, urban expansion or garbage dumps. true or false |
true |
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the anthropocentric acceleration of eutrophication in an aquatic system is called ______ _____ a. sewer system b. natural eutrophication c. cultural eutrophication d. trophic tipper |
cultural eutrophication |
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Why are mangrove ecosystems important? a. mangroves protect the shoreline from erosion b. mangroves provide important habitats for invertebrates c. mangroves (like wetlands) filter nutrients, preventing them from reaching sensitive coastal environments. d. all of these are true |
all of these are true |
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what is the most threatened ocean area of coral reef destruction? a. off the pacific coast of north america b. Galapagos islands c. southeast Asia d. Antarctica |
southeast Asia |
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which of the following is one of the changes in coastal environments during he past three centuries? a. natural climatic changes b. rapid population growth c. increased fluxes of nutrients, sediments, pesticides, trace metals and organic matter. d. two of these are correct |
two of these are correct |
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the global average annual municipal waste generation per capita is 240 kg/person. if there are 7 billion people on the planet, how much wast is generated annually by the human population? a 1.7 trillion b. 7 trillion c. 14 billion d. 14 trillion |
1.7 trillion |
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five causes of land degradation include: deforestation, fuel wood gathering, industrial and waste pollution, overgrazing, and ____ a. glacial advance b. tectonic subduction c. continental rifting d. agricultural practices |
agricultural practices |
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the rhine river is healther today than it was in the 1950's. True or false |
true |
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at current rates of destruction ______ of coral reef ecosystems could be lost in the next several decades. a. 5% b. 10% c. 90% D. 60% |
60% |
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which of the following is a major type of water pollutant? a. excess nutrients b. suspended sediment c. toxic chemicals d. all of these are major types of water pollutants |
all of these are major types of water pollutants |
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what causes hypnotic zones, like the one in the Gulf of Mexico? a. fertilizer runoff b. burning fossil fuels C. trace metal build up D. an excess of oxygen in the surface water |
fertilizer runoff |
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what are zooxanthellae? a. the symbiotic algae that give coral their color b.a new pop music group c. a type of fish that is particularly susceptible to toxic chemicals in the water d. its a made up word like "whatchamacallit" |
the symbiotic algae that give coral their color |
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which of the following is NOT a type of soil degradation? a. wind and water erosion b. all of these are types of soil degradation c. chemical pollution d. salt concentration from irrigation |
all of these are types of soil degradation |
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______ play a critical role in both the hydrologic cycle and insediment dispersal and storage. a. piers b. dams c. spits d. wind turbines |
dams |
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one can understand marine biogeochemical systems best by exclusively studying the ocean. true or false |
false |
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how large is the great pacific garbage patch? a. about as big as Connecticut b. about twice the size of Texas c. the size of new Hampshire d. the size of new York city's central park |
about twice the size of Texas |
