Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 46, Problem 22RQ
The process whereby oxygen is depleted by the growth of microorganisms due to excess nutrients in aquatic systems is called._______
- dead zoning
- eutrophication
- retrofication
- depletion
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The process whereby oxygen is depleted by the growth of microorganisms due to excess nutrients in aquatic systems is called ________. a. dead zoning b. eutrophication c. retrofication d. depletion
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Chapter 46 Solutions
Biology 2e
Ch. 46 - Figure 46.8 Why do you think the value for gross...Ch. 46 - Figure 46.10 Pyramids depicting the number of...Ch. 46 - Figure 46.17 Which of the following statements...Ch. 46 - The ability of an ecosystem to return to its...Ch. 46 - A re-created ecosystem in a laboratory environment...Ch. 46 - Decomposers are associated with which class of...Ch. 46 - The primary producers in an ocean grazing food web...Ch. 46 - What term describes the use of mathematical...Ch. 46 - The position of an organism along a food chain is...Ch. 46 - The loss of an apex consumer would impact which...
Ch. 46 - A food chain would be a better resource than a...Ch. 46 - The weight of living organisms in an ecosystem at...Ch. 46 - Which term describes the process whereby toxic...Ch. 46 - Organisms that can make their own food using...Ch. 46 - In the English Channel ecosystem, the number of...Ch. 46 - What law of chemistry determines how much energy...Ch. 46 - The mussels that live at the NW Eifuku volcano are...Ch. 46 - The movement of mineral nutrients through...Ch. 46 - Carbon is present in the atmosphere as ________...Ch. 46 - The majority of water found on Earth is: ice water...Ch. 46 - The average time a molecule spends in its...Ch. 46 - The process whereby oxygen is depleted by the...Ch. 46 - The process whereby nitrogen is brought into...Ch. 46 - Which of the following approaches would be the...Ch. 46 - How would loss of fungi in a forest effect...Ch. 46 - Compare and contrast food chains and food webs....Ch. 46 - Describe freshwater, ocean, and terrestrial...Ch. 46 - Compare grazing and detrital food webs. Why would...Ch. 46 - How does the microcosm modeling approach differ...Ch. 46 - How do conceptual and analytical models of...Ch. 46 - Compare the three types of ecological pyramids and...Ch. 46 - How does the amount of food a warm-blooded animal...Ch. 46 - A study uses an inverted pyramid to demonstrate...Ch. 46 - Describe what a pyramid of numbers would like if...Ch. 46 - Describe nitrogen fixation and why it is important...Ch. 46 - What are the factors that cause dead zones?...Ch. 46 - Why are drinking water supplies still a major...Ch. 46 - Discuss how the human disruption of the carbon...
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- Figure 20.12 Which of the following statements about the nitrogen cycle is false? a. Ammonification converts organic nitrogenous matter from living organisms into ammonium (NH4+) . b. Denitrification by bacteria converts nitrates (NO3) to nitrogen gas (N2) . c. Nitrification by bacteria converts nitrates (NO3) to nitrites (NO2) . d. Nitrogen fixing bacteria convert nitrogen gas (N2) into organic compounds.arrow_forwardFigure 46.17 Which of the following statements about the nitrogen cycle is false? Ammonification converts organic nitrogenous matter from living organisms into ammonium (NH4+). Denitrification by bacteria converts nitrates (NO3-) to nitrogen gas (N2). Nitrification by bacteria converts nitrates (NO3) to nitrites (NO2-). Nitrogen fixing bacteria convert nitrogen gas (N2) into organic compounds.arrow_forwardGasping for Oxygen Explain how each of the following contribute to dissolved oxygen decline in aquatic ecosystems: Rising water temperatures slowing streams organic pollutants/eutrophicationarrow_forward
- In Eutrophication, excess nutrients can cause algal blooms. However, what happens when the algae eventually die? Bacterial – Increase or decrease Oxygen – Increase or decreasearrow_forwardExplain how streams can cleanse themselves ofoxygen-demanding wastes and how these cleansing processes can be overwhelmed. What is wastewater? Describe the state of stream pollution inmore-developed and less-developed countries.Give two reasons why lakes and reservoirs cannotcleanse themselves of pollutants very well. Define and distinguish between eutrophication and cultural eutrophication. List three ways to prevent orreduce cultural eutrophication. What are the majorsources of groundwater contamination in the UnitedStates? Explain why groundwater cannot cleanseitself very well. List three ways to prevent or cleanup groundwater contamination. List some ways topurify drinking water. Describe the purification ofdrinking water in more-developed and less-developedcountries. Describe environmental problems causedby the widespread use of bottled water. How are lawsused to protect drinking water in the United States?List three ways to strengthen the U.S. Safe DrinkingWater Act. Describe how…arrow_forwardDraw a food chain for Puget Sound using these organisms and abiotic components. Some possible organisms to include in the food chain are: herring, marine bacteria, people, phytoplankton, pteropods, krill, oysters, Dungeness crab, salmon, Orcas.arrow_forward
- Explain how streams can cleanse themselves andhow these cleansing processes can be overwhelmed.What is wastewater? Describe the state of streampollution in more- and less-developed countries.Give two reasons why lakes cannot cleanse themselves as readily as streams can. Distinguish betweeneutrophication and cultural eutrophication. Listways to prevent or reduce cultural eutrophication.Explain why groundwater cannot cleanse itself verywell. What are the major sources of groundwatercontamination in the United States? List ways to prevent or clean up groundwater contamination. Listsome ways to purify drinking water. Describe the environmental problems caused by the widespread useof bottled water.arrow_forwardPollutant released due to human activities (like effluents from industries and homes) can radically accelerate the ageing process of the water body .(a) Explain how does this process occurs during natural ageing of lake.(b) Give the term used for accelerated ageing of water bodies. Also give the term used for the natural ageing of lake.arrow_forwardThe benthic zone is home to organisms which are photosynthetic. intertidal. heterotrophic. adapted to high light. Some ecosystems develop a vertical structure (such as seen in a tropical forest). The cause of this is due to competition for which resource? nitrogen minerals moisture carbon dioxide light The biome that is characteristic of Bronx County is a taiga. temperate deciduous forest. temperate rain forest. desert. coniferous forest.arrow_forward
- State whether the following is True or False of the process of eutrophication from the overuse of fertilizers. Group of answer choices Eutrophication often starts with stimulating algal growth [ Choose ] TRUE FALSE Eutrophication results in loss of dissolved oxygen from the process of photosynthesis [ Choose ] TRUE FALSE It is the decomposition of algae after algal blooms that lead to bacterial growth causing a loss of oxygen [ Choose ] TRUE FALSE Eutrophication is a natural process and can occur in the absence of fertilizers [ Choose ] TRUE FALSEarrow_forwardThe Lazy River Environmental Group organized a major cleanup of the pollution from the old factory in late 2010. Measurements of pollution in river sediments before and after the cleanup were analyzed to determine the effectiveness of the cleanup. Select the Sediment Pollutant Over Time dataset and follow the interactive to graph the data. What statement best describes the results of the clean up?arrow_forwardCarbon can be sequestered in the ocean in a variety of forms. Discuss the different forms, their biological sources, and how global warming will influence themarrow_forward
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